19,876 Topics
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| | I am trying to input a text file with twenty unsorted names in it into an array and then perform a bubblesort and output to a new file. The filename for the txt file is names.txt Here is what I have so far....not much...I would appreciate some help the right … |
| | I will start a new project. But I have some simple questions about it : 1) Is the C faster than Java on processes which has no graphic user interfaces (like softwares which are working just from command line) ? 2)Because if the C is faster than Java, I want … |
| | I don't believe there is a Forum dedicated to Cryptography so I will post in the C forum since the program I've used to decode a base 64 encoded file was written in C. I have been given a base64 encoded file and I have managed to remove the base64 … |
| | please help.. a small airline wants you to create an automated reservation system.the system has to assign seats on each flight of the airline's only plane(capacity:10 seats).your program should display the ff. alternative choices: PLEASE TYPE 1 FOR "FIRST CLASS" \n PLEASE TYPE 2 FOR "ECONOMY".\n\n\n if the person types …  |
| | How would I make all letters be an invalid input? I want all letters, numbers greater than 20, and numbers less than or equal to 0 to be invalid inputs. I used an or cause I want any case to be an invalid input. Any help would be greatly appreciated. … |
| | Hello People, I cannot understand how this expression gets evaluated .. 1+~0 From what I know ~ has higher priority . So the expression becomes 1+(~0)= 2 But the answer that I got was 0. I know it is some thing to do with the fact that ~ is right … |
| | Basically I am totally confused on how to pass a char, which is given by the user, and then store it and pass it to another function by reference.  |
| | The following code gets segmentation fault: [CODE] void dfs_visit(graph g, int u) { // printf("u: %d\n",u); /* g.vertices[u].color = GRAY; g.vertices[u].d = time++; printf("before visit for loop\n"); for (int i = 0;i < g.number_vertices;i++) { if (i != u) { if (g.vertices[i].color == WHITE) { g.vertices[i].p = u; // dfs_visit(g, … |
| | [CODE] int main() { char c1, c2; printf("Enter a character: "); scanf("%c", &c1); printf("Enter another character: "); scanf("%c", &c2); system("pause"); return; } [/CODE] Thats what my code looks like, the problem is the code skips the part where it lets you input c2. I dont understand why its doing this. …  |
| | [CODE] //This is what we are asked to print in the assignment of Binary Search Trees.The Nodes are printed like: F +-- D | +-- NULL | \-- NULL \-- R +-- P | +-- M | | +-- NULL | | \-- N | | +-- NULL | | … |
| | Hey, I have no idea if this thread already exists. I did try to make one before but it seemse like it didn't work. So here goes ! My question is - How do I put my .o files into an object library file? I'm using c++ visual studio express … |
| | Hi i have weird doubt. My assingment is C++ program to insert and delete elements in Binary Search Tree.I am almost done wid the assingment. But the major part lies here. the strucure of the output is difficult to obtain.. i will explzin the question now. Input: F D R …  |
| | Hi, I need one of my assignments to be done in C or C+. Need someone who can do the assignment for it. Need it urgently..need the assignment done by sunday. Will pay money for doing the assignment. Please email me immediately <<Email Snipped>> thanks Raj |
| | Hello. Can someone please tell me what happens when you cast a large number to a char? For example: [CODE=C] char string[8]; int num = 2040; string[0] = (char) num; [/CODE] I'm working my way through a larger program to figure out what it does, but I'm not sure how …  |
| | I wrote a program for counting and printing characters in a data link layer frames i've succeeded in getting output for the first frame but for the other frames it showed not valid please help in the code If i give an input as 6sudhi4div then the integer in the … |
| | Hello, This might not appear like a programming question, but inherently deals with code. I have a following piece of test-code, which has obvious errors like array index out of bounds, memory leak:- [CODE] #include "stdio.h" #include "stdlib.h" main() { int i; char *ptr; ptr = (char*)malloc(5); for(i=0;i<10;i++) { ptr[i]=(char)i; … |
| | Hello, Can we download files from WWW using a C code? I could find codes in C#, php, and Java and I wonder if it can be done in C. Thanks. |
| | here i have two bubble sort versions. [CODE] void bsort() { int i,j,jc=0,ic=0,temp,swap=1; //for(i=0;i<NOE & swap;i++){ this one or for(i=0;i<NOE-1 & swap;i++){ \\ this swap=0,ic++; for(j=0;j<NOE-1-i;j++){ jc++; if(a[j]>a[j+1]){ temp = a[j]; a[j] = a[j+1]; a[j+1] = temp; swap = 1; } } } printf("jc=%d ic=%d\n",jc,ic); } [/CODE] i checked it … |
| | i programming in c language and i need to using parallel port the compiler that i using : "microsoft visual C++" int the old compiler i using this command : inport(0x378) but now in vc that not work please help me... |
| | how to search the file using the C#.net windows application ? |
| | Hello, I have a weird problem. I have a class implemented that looks something like the following: [CODE] class textBox { public: // default constructor textBox() { m_text = ""; } textBox(string text) { m_text = text; } string getText() { return m_text; } private: string m_text; }; [/CODE] Now, … |
| | I'm new to structures, our instructor haven't discussed it yet... Im trying to make a program that will ask the user 5 "fruits". Ex. The user input: Mango Apple Mango Grapes Grapes Output: Fruits entered: 2 Mango 1 Apple 2 Grapes I've trying to see some tutorials but i can't … |
| | Let's say we want to free the total memory used by a linked list in a program, I generally do it like this [CODE]typedef struct linked_list { int some_data; struct linked_list *link; }NODE; int free_memory(NODE * head) { NODE * temp = NULL; if(head == NULL) return 0; // FAILURE … |
| | Hello People... I found this sample code online [code=c ] int main(int argc, char* argv[]) { struct bitfield { signed int a:3; unsigned int b:13; unsigned int c:1; }; struct bitfield bit1={2,14,1}; printf("%d",sizeof(bit1)); return 1; } [/code] I compiled this code on linux with gcc compiler and the output I … |
| | Hi there, I'm putting together a simple client and server to receive packets containing video data. Here is the part where data is read. The data packets contain typically around 1000 - 1500 bytes of data. [CODE] int getNoPackets = 0; int packetsWrittenToFile = 0; for (i=0; i<NPACK; i++) { … |
| | hi, with this code fragment: [CODE] #include <stdio.h> void print_bit_string(char x) { int s = 128; for (int i = 0;i < 8;i++) { printf("%d",x & s? 1: 0); s >>= 1; } printf("\n"); } char abs(char x) { if (x < 0) { x = -x; } return x; … |
| | I created a c# graph. But, first time it is loaded, it is not show in the correct format(Pic1). For second ,third ,fourth etc time, it is shown in correct format(Pic2).  |
| | Hi everyone, new to the DaniWeb community, i have always used it for homework help in the past, but i'm about to rip my hair out if i stare at this code for another hour. basically the project is to write a code that reads data from a file, gets … |
| | Hi all, Does anyone know how to create sessions with c++ cgi? I am using c++ cgi to connect users from web to IMAP server. How can create sessions so that next cgi knows which user is this, etc. Thanks, nadz |
| | I am new to programming. If it's a dumb question please forgive me for wasting a thread. But I wanna know. Why is this code not working? [CODE] int main() { char sndex[6][8]; sndex[0]={"BFPV"}; sndex[1]={"CGJKQSXZ"}; sndex[2]={"DT"}; sndex[3]={"L"}; sndex[4]={"MN"}; sndex[5]={"R"}; [/CODE] The Compiler (MingW + DevCPP) is showing this: [CODE] In … |
 | Hello here i am posting the non recursive or no recursion implementation of outputting [B]Permutations of a string [/B]as compared to the recursive implementations previously posted. Any feedback, constructive criticism or comments are most welcome. |
| | Could somebody please help me with this program. This is my first time working with an EOF loop. This program simply adds up all the input numbers. My task is to have the last wanted input terminated by an EOF. However, when I run my program, my loop is infinite. … |
| | i have a problem with a program which gets a matrix[3][3] (with values 1-20.) i want to print the index of cells whose surrounding cells all have lower values. in a matrix 0 0 0 0 1 0 0 0 0 it supposed to print only [1][1]. can someone look … |
| | Does anyone know how to do this: I need to read data from a .txt file into a multidimensional array that is dynamically allocated from memory. How would one do that? Thanks to whoever can help me! |
| | Hello i'm getting a segmentation fault in my is_validport() function and could somebody people point out what i'm doing wrong please? [CODE]#include <stdio.h> #include <stdlib.h> #include <stddef.h> #include <ctype.h> #include <string.h> /* Function definitions. */ //char *is_uid(char *s); char *is_destportseq(char *s); char *is_destport(char *s); char *is_validport(char *s); char *trimwhitespacestartandend(char *str); … |
 | hi i am trying to write a simple calculator.i have posted the code below,it works fine for one time solution. but i want the answer to be used for next calculation and also want to put a code to end the program. [CODE] int A,B,C; char op; cout<< "Enter a …  |
| | Hi, I want to take a command with its options as input and execute it with one of the exec() functions. My approach is to take input first and put it in an array by dividing with string tokenizer. Then I call execvp() which takes the array including the command … |
| | I'm relearning (OK, "learning" would be a better term since I never really understood it the first time) piping. My end goal is to execute some shell commands like "ls", get the results into another variable, and do some stuff with it. I imagine I'll end up using commands like … |
| | For this content of the file/stdin: [CODE] a 3 W 10 A 100 , 10 k 7 . 3 I 13 [/CODE] I have written the following code [CODE] while (k-- > 0) { scanf(" %c %d",&c, &p); printf("c: %d p: %d\n",c,p); } [/CODE] if I change the format string … |
| | When you have a function and need to scan for 2 different numbers, should the scanf be in the function or in the main() and why? |
| | Could someone explain where and when you would use << and >>. I read these 2 articles but don't really understand them. [url]http://en.wikipedia.org/wiki/Operators_in_C_and_C%2B%2B[/url] [url]http://en.wikipedia.org/wiki/Arithmetic_shift[/url] |
| | With my code below how would I either ignore or remove decimal numbers? I tried typecasting it but that messed up my code. I can't think of any way to make a loop to accept only integers either :(. I don't understand why the scanf is accepting decimal numbers when … |
| | Hi all, I have to make a function which take as parameter two arrays and merge in one new. For example int array1[][] = {{1 , 2, 3, 4}, {2, 3, 4, 5}}; int array2[][] = {{5 , 6, 7, 8}, {6, 7, 8, 9}}; To take as result arraynew[][] …  |
| | Hello Can someone help me understand the difference? Human h = new Human(); or Man m = new Man(); vs. Human h2 = new Man(); recently I have seen an object instantiated like this - where it references this other object (after the "new" keyword ) I am trying to … |
| | Can someone tell me why my compiler won't compile this code and how to fix it? [CODE]void gcd(int x, int y) { if (x > y) { int c; while(1) { c = x % y; return y; x = y; y = c; } if (y > x) { … |
| | /*O.k. I am down to a few less errors. I do not understand how to correct them, I have placed the ";" everywhere and it does not make a difference, in fact I get more errors. Still confused! Thank you. Here it is again. This is a program that processes … |
| | I'm new here so please bare with me if this is the wrong forum (sorry if it is). I put it here because I believe you can contruct a kernel in c right? I've downloaded the linux kernel and thats full of c source files. Anyway, i've been using windows … |
| | Hey, my friend and I made this website: [url]http://www.letslearncpp.forumstech.com/[/url]. This website is complete with text and video tutorials made by my friend and I. Please visit this website and join it if you want to. Thank you. |
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| | [b]Split from - [url]http://www.daniweb.com/forums/thread118867.html[/url] [/b] [code] int main() { int i , parent_id , ans ; parent_id = getpid() ; for ( i = 1 ; i <= 5 ; i++ ) { if ( getpid() == parent_id ) { ans = fork() ; wait() ; } if ( ans …  |
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