19,876 Topics
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| | Hi all!! See the following code: #include <stdio.h> int main() { union a { int i; char ch[2]; }; union a u; u.ch[0]=1; u.ch[1]=0; printf("%d %d %d\n",u.ch[0],u.ch[1],u.i); getch(); return 0; } The output that I get is: 1 0 2130509825 Why am I getting this number? What I think the … |
 | #include<stdio.h> #include<stdlib.h> struct student{ char *name; int number; }; struct class{ char *name; struct student *st_array; // pointer of array of students int size; // All students free places int current_size; // Occupied places }; struct student make_student(char name[100], int number){ struct student st; st.name = name; st.number = number; …  |
| | Hi, I have a large array of values and would like to find a way to calculate the change in value for each period. I have been attempting to use a for command with an array to do this, but I have not been successful at all. The basic idea … |
| | Hello i was assigned for a task to find the Name and books Taken as a count from the given TWO array table , I wrote a program but it's not working , experts pls help me out!! commondata b/w the TWO ARRAY TABLES are - ID of a student …  |
| | Hi all! I was experimenting a little with scanf. I am posting the code and the outputs I am having prolems understanding: #include <stdio.h> int main() { char a,b,c; int d,e; scanf("%c%c",&a,&b);//-------------------(1) printf("%c %c\n\n",a,b); scanf("%d%d",&d,&e);//-------------------(2) printf("%d %d\n\n",d,e); scanf("%c abc",&a);//--------------------(3) printf("%c\n\n",a); scanf("%c abcdefgh",&a);//---------------(4) printf("%c\n\n",a); getch(); return 0; } In (1): Doesnt … |
 | Is the first texture name returned from glGenTextures always guaranteed to be 1 for the first call in your program? |
| | #include <stdio.h> #include <stdlib.h> int main() { begin(); } int begin() { long int b,res1,res2,res3; int a,c,d,e,f,i; printf("Enter first number: "); scanf("%d",&a); printf("Enter second number: "); scanf("%ld",&b); c=b%10; d=b%100-c; e=b/100; res1=a*c; res2=a*d; res3=a*e; f=a*b; printf("\n\n\n"); printf(" %d\n",a); printf("x\n"); printf(" %d\n",b); printf("________\n"); printf(" %ld\n",res1); printf("+ %ld\n",res2); printf(" %ld\n",res3); printf("_______\n"); printf("%d\n",f); system("PAUSE"); …  |
| | Please Tell me how to scan a source file in c..suppose a file i am giving as input and i have to scan that files for different things...can anybody help me!!!!! |
| | warning: int format, pointer arg (arg 2) i have no pointers this function :( main.. functions.... functions. int test(char num) { int total[SIZE]; printf("%d",total); fflush(stdout); //no pointers return 0; } |
 | Hi, my project works with emulating the file system. I can invent my own as well. I'm developing a unix like shell which will provide all the file handling commands similar to unix. Basically I want to allocate a large file on the actual file system, and treat it as … |
| | hi there guys can you suggest me some games that I can program in c sharp in an object oriented way? just simple programs that can be done for maybe less than a week since I'm just starting to learn it yet. Any idea? Please help me guys I will … |
| | i have problem that the the loop to check if a digit is correct but not at the right place. then print. void feedback( char random[4], char guess[5]) { int i; for(i=0; i<4; i++) { if(guess[i]==random[i]) { printf("#"); } } if((guess[0]==random[1]||guess[0]==random[2]||guess[0]==random[3])&&guess[0]!=random[0]) { printf("*"); } if((guess[1]==random[0]||guess[1]==random[2]||guess[1]==random[3])&&guess[1]!=random[1]) { printf("*"); } if((guess[2]==random[0]||guess[2]==random[1]||guess[2]==random[3])&&guess[2]!=random[2]) { …  |
| | Hello again! I am still working on a program, and I am now working on sorting an array. Well, the array is a bunch of strings read from a text file. Some of the strings were turned into integers. I need to take the strings and find a way to … |
| | Hi, I created a C program which basically calculates bunch of variable values.... Although the desired output for the final version program is just a few lines, however, for debugging purpose, I've printed the variable values everytime a change is being made in-code. As a result, the output consist of … |
| | i need help with if statement. for some reason its not working right and i dont know why. i never goesinside 2nd if statement. i i want to go inside this if statement - if left_var value is "2x" //for loop iam start with x. b = 'x' and b-1 …  |
| | Hi, i want to read each of the 4 columns stored in a .txt file separated by a space into an array of their own. The text file may have hundreds of rows so reading until the end of file is desirable. Example: 3.4407280e+003 6.0117545e+003 8.0132664e+002 2.5292922e+003 3.4163843e+003 5.9879421e+003 7.7792044e+002 …  |
| | Hi there, As the title says, I'm having an issue passing an array of structures to a function.The structure reads and tokenises information from a text file. I then need to do things with that data using several different functions. Here's my code: #include <stdio.h> #include <stdlib.h> #include <string.h> typedef … |
| | lets say i have a i have a char array char left_var[] //-33x-4x+x this char left_var array has the value of "-33x- 4x+ x" and result should be "-33-4+1" and store in another array called in another word iam trying to get rid of x's and if there is only … |
| | Well, it's been a lonngg time since I've last been on DaniWeb and everything looks different. Anyway, I'm having a bit of a brain fart I suppose so I'm hoping someone can help me out. I've been working on this program that basically reads in a fasta file with multiple … |
| | Hi, Is this a valid while loop? : while((grid[tr][tc]=='0'||grid[tr][tc]==s[i]) && tr<row && count<strlen(s)) { ++count; ++tr; } Although the full program compiles fine, but *sometimes* my program crashes during runtime giving me a "Access violation(Segmentation Fault)" error and the debugger points to this loop statement... By the way, I'm using …  |
| | I was reading a book and it said "Mac names cannot be overloaded and the macro preprossor cannot handle recursive calls: #define PRINT (a,b)cout<<(a)<<(b) #define PRINT (a,b,c) cout<<(a)<<(b)<<(c) /*trouble?:redefines,does not overload*/ Can someone pls explain possibliy with examples? |
 | Given two integers A & B. Determine how many bits required to convert A to B. Write a function int BitSwapReqd(int A, int B); Please first define the logic to calculate the number of bits required to convert A to B and then code. Thankx a lot.  |
| | Hello All, I am new to C programming. I was trying to write a code that will allow me to take an array of n elements, and take every combination of pairs and write it. example: array: 1, 2, 3, 4, 5 output: (1,2), (1,3),(1,4),(1,5),(2,3),(2,4),(2,5),(3,4),(3,5),(4,5) I would truly appreciate the …  |
| | how to remove zeros from int array? for ex if i have a array 1,2,0,34 than result is 1,2,34. i was thinking may be use trim function? another idea was to put space. for ex 1,0,2,0,3 than reslust is 1, ,2, ,3 note iam trying to do this without making …  |
| | I've attempted to create a linker for assembly files, what the program does is not the issue here though, I havent used pointer arithmetic in a few years and am definitely rusty in doing so. I'm getting a segmentation fault when I attempt to run the file and would like … |
| | hello guys my code is not giving me any errors but wont execute the task it just loops can, anyone help me debug it. its a code for extracting book information from a chinese website. thanks in advance. using System; using System.Collections.Generic; using System.Collections.Concurrent; using System.Text; using System.Text.RegularExpressions; using System.IO; … |
| | Im suppose to have this prompt me via stderr to enter two 32-bit keys. I use fgets tofrom stdin to read up the line the user inputs. Then im suppose to parse the line into tokens using strtok_r that converts them to unsigned longs. I already have a function strToULong.c … |
| | it gets compiled but it crushes: "programm has stopped working" Please help me!!! this is the programm: #include <stdio.h> #include <stdlib.h> int main(int argc, char *argv[]) { FILE *fp; int i=0, n; char allwords[100][40]; fp=fopen("fraoules.txt","r"); if ( (fp=fopen("fraoules.txt","r") )==NULL ){ printf("To arxeio den mporese na anoixtei\n"); } while(strcmp( allwords[i],"telos")!=0){ fscanf(fp, … |
| | Hello, I am having trouble with a program I am writing. The problem is that I need to take information from a text file, read it, and then output the information into another text file. I keep getting this output: > <ProductSummary>0015D7A00015D7A00015D7A00015D7A00015D7A00015D7A00015D7A00015D7A00015D7A00015D7A00015D7A00015D7A00015D7A00015D7A00015D7A00015D7A00015D7A00015D7A00015D7A00015D7A00015D7A00015D7A00015D7A00015D7A00015D7A00015D7A00015D7A00015D7A00015D7A00015D7A00015D7A00015D7A00015D7A00015D7A00015D7A00015D7A00015D7A00015D7A00015D7A00015D7A00015D7A00015D7A0 </ProductSummary> I need it to output something like … |
| | trying to create fifo that can read and write. but some reason its not going below "O_RDONLY" line. any thoughts? char *fifo_name = "fifo"; #define 0666 int main() { int fd1; int fd2; //create fifo if(mkfifo(fifo_name,FIFO_MODE) == -1) { exit(1); } //open fifo for read if((fd1 = open(fifo_name, O_RDONLY)) == … |
| | hi i try to build a project in c by using code::blocks but i get this result: vector_matrix multiplication - Debug" uses an invalid compiler. Probably the toolchain path within the compiler options is not setup correctly?! Skipping... Nothing to be done. |
| | #include <stdio.h> #include <stdlib.h> #include <string.h> int main() { FILE *file; char ch, str[500], a=0; char name[20], word[50], temp[50]; int i,lenght=0, b=0; if((file=fopen("sample.txt" , "r"))==NULL) { printf("Error while opening file\n"); system("pause"); exit(1); } while (!feof(file)) { fgets(str, 499, file); printf("%s\n",str); ch=fgetc(file); if(ch!=' ') { a++; word[b]=ch; if(a > lenght) lenght=a;f … |
| | Hi everyone, I'm trying to parallelise a Gram-Schmidt algorithm. Here's the serial code: for( k = 0; k < m; k++ ) { for( i = 0; i < k; i++ ) { s = 0.0; for( j = 0; j < n; j++ ) { s += q[ i … |
| | I want to push a value to a stack using the assignment operator, I need some help with this.. Thanks Stack s; float x = 5; s = x; class Stack { public: Stack(); float push(float value); float pop(); int Size(); float operator = (const float &right); private: float values[30]; …  |
| | what does fork() do in c.? Is it same as fork operation in OS ? What is the o/p of following program ? #include<stdio.h> main() { int i=0; fork(); printf("%d",i++); fork(); printf("%d",i++); fork(); wait(); } |
| | Need help from daniweb community. I suck at programming. It doesn't make sense to me. I'm not going to be programming in my career but it's part of my major. I'm desperately trying to get an c- just to pass. Would love some help. I would appreciate some explanation but … |
| | I'm trying to use the system call to append an arbitrary number of files to one specific file... when I attempt to run the program i get the error: sh: addints.o: not found sh: main.o: not found sh: rbyswt.o: not found sh: readint.o: not found sh: writeint.o: not found sh: …  |
| | I have an application that will be minimized and running in the background. I want this application to have it's own moveable mouse so that it does not use my current mouse. How can I accomplish this? I'm not exactly sure where to start to create a mouse for it. |
| | Hi all, can someone please help me with my code: Its suppose to input a text file of values then display them and give the max and its index, and inputed values are floats. But I can seem to get the max right. Thanks #include <stdio.h> int main() { FILE … |
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| | The hash table stores phone numbers and names, uses the names as the keys. The problem I have is when I use the terminal window to enter the names and numbers. The strange problem that occurs then is that all the names get the same phone number. But when i … |
| | Guys I have some questions please help me., 1. if I make a tetris game out of c# will it be difficult to do? 2. Is it possible to finish it in less than a week ? 3. Also what should I use as a game studio? OpenGL, XNA or …  |
| | Its an exam question that wants to modify code so that the following output is generated 1 2 3 4 5 2 3 4 5 3 4 5 4 5 5 **This was the original code** #include<stdio.h> void main() { int i,j; for(i=1;i<5;i++) { for(j=1;j<=5;j++) { printf("%d",i); } printf("\n"); } … |
| | hi.. i am trying want to solve this Write a complete program that reads 11 integers from a file called ‘file.txt’ and stores them in an array. Your program should then remove the duplicated numbers, find and print the sum of all the even numbers in the array as well … |
| | Hi, how do i output a list,1-5 of the following factorial? #include <stdio.h> #include <stdlib.h> #define fact 5 int main(void) { int i,result=1; for (i=fact;i>=1;i--) result*=i; printf("factorial of (%d) = %d\n", fact, result); return(EXIT_SUCCESS); } |
 | I made a program, hangman. And I am trying to complete it. I have succesfully been able to compare the input letter by all the characters of the word to be guessed (which is saved in an char array) and display it. But now, I can not figure out how …  |
| | Hi there guys I need your suggestions. Do you know any system or game that is not that hard to program, like something that can be done for less than 3 weeks because I need it for my term project. thank you for those who will help out. |
| | I got this simple code: #include "stdio.h" #include "stdlib.h" #include "windows.h" int main(int argc, CHAR* argv[]) { HANDLE hFile = NULL; HANDLE hMapFile = NULL; LPBYTE fileView; hFile = CreateFile(argv[1],GENERIC_READ,FILE_SHARE_READ,NULL,OPEN_EXISTING,FILE_ATTRIBUTE_NORMAL,NULL); if(hFile == INVALID_HANDLE_VALUE) { printf("CreateFile function failed\n"); goto clean; } ***** hMapFile = (LPBYTE)CreateFileMapping(hFile,NULL,PAGE_READONLY,0,256,NULL);***** if(hMapFile == NULL) { printf("CreateFileMapping function … |
| | Hi Everyone!! I'm facing a few problems in storing the structutres or records in a file. I'm trying to store the usernames and passwords(Taken as example), of a person in a single record as structure variable **w[99].** and **i=0 to i<=100 *** When the program Executes for the first time, … |
| | Hello Everbody, I have 2 arrays called Array 1 Array 2 Stuid stuname stuid Bookname 1 Albie 1 OOPS 2 Morkel 2 CNA 3 Jmes 1 ComputerNw 3 OOPs 2 CNA Code: #include<stdio.h> main() { // char array1[2][1],array2[5][1]; char array1[100][100]={'ID1','srini','ID2','Albie','ID3','Kaasi'}; char array2[50][100]={'ID1','OOPS','ID2','STS','ID1','STS','ID1','CTC','ID3','MAT','ID2','MAT'}; printf("We're Begining the Comaprison Here !!\n\n"); search(array1[][],array2[][]); } … |
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