19,876 Topics
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| | I just learned C++ style casting and the 4 types of casts. I'm not sure if I'm abusing it though. Examples: typedef long (*stringFromString)(int, char*) __cdecl; //TO: typedef long static_cast<*stringFromString>((int, char*)) __cdecl; SmartSetup((char*)World.c_str(), (char*)",f5", 765, 503,(char*)""); //TO: SmartSetup(static_cast<char*>(World.c_str()), static_cast<char*>(",f5"), 765, 503, static_cast<char*>("")); memcpy(&INH, (void*)((DWORD)Buffer + IDH.e_lfanew), sizeof(INH)); TO: memcpy(&INH, static_cast<void*>(static_cast<DWORD>(Buffer) …  |
| | Hey, Is there any difference between the 2 syntax, ie, str = "This is a test"; and strcpy(str,"This is a test"); I think, both of them, malloc some random 200 addresses, and give the starting location of the 200 chunk to the pointer variable 'ptr'. #include<stdio.h> char* str; int main(void) … |
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| | void insertion_sort(int *a, int n) { int for(i=1;i<n;i++) { value=a[i]; for(j=i;j>0 && value<a[j-1];j--) a[j]=a[j-1]; a[j]=value; } } can anyone pls explain me the flow of this code... i am having confusion in understanding the flow..  |
| | Hey, Is there a way to know the contents at address 6295600(say) in C ? I don't want to do using a pointer, that is, something like printf("%d",*p); int a = 5; p = &a; and address of a = 6295600. I want to be able to do something like, …  |
| | How do I print out the address a pointer is holding. Currently I'm using the code pasted below. But I'm getting this error. Error: t.c:13:2: warning: format ‘%u’ expects argument of type ‘unsigned int’, but argument 2 has type ‘char *’ [-Wformat] Code: #include<stdio.h> #include<malloc.h> #include<string.h> #include<stdlib.h> char* str; int … |
| | void selection_sort (int *a, int n) { int i, j, m, t; for (i = 0; i < n; i++) { for (j = i, m = i; j < n; j++) { if (a[j] < a[m]) m = j; } t = a[i]; a[i] = a[m]; a[m] = t; … |
 | **Bold Text Here* what is the code for performing mathematic calculation based on BODMAS rule in C*(such as 6+6/2=9) ,any suggestion ,plz??  |
| | hello friends, i have read a question about pointers and seems totally new concept for me .. how would you find out if one of the pointers in a linked list is corrupted or not? pointer is corrupted ??,, don't understand :( pls help your friend : sparsh |
| | hello friends, i m doing programming in vc++. but while making a basic program of link list facing a problem. when i try to add aaloc.h file it turns into atlalloc.h. there is no file as alloc.h. #include <stdio.h> #include <atlalloc.h> struct node{ int data; struct node *link; }; void … |
| | Hey I am trying to find a way for the user(not the programmer) to determine how many decimal places a number will print out to. I have tried pointers, precision mods and even a sub program to bypass my lack of knowledge in this area. Any help would be greatly … |
| | #include<stdio.h> #include<string.h> void recurse(char [],const char *); int main() { char *charset="abcdefghij"; recurse("",charset); } void recurse(char str[],const char *charset) { int len; len=strlen(str); strcat(str,charset[len+1]); if(len<strlen(charset)) recurse(str,charset); printf("%s",str); } Like the question says, what is wrong here? This is the logic of my program 1. Keep a string called charset which … |
| | Following the "Head First eBook". First Chapter has a contacts excercise where controls are added. The attached image shows a drop down option for the people table. Although I found it by chance in Visual Studio 2008 Team System, I have not been so fortunate with C# 2010 express. An …  |
| | Am I freeing and declaring this 2d array correctly? int **ratings; ratings = (int**)malloc(sizeof(int *) * (numCouples*2)); for(i=0; i<numCouples*2*numCouples;i++) ratings[i] = (int*)malloc(sizeof(int) * numCouples); //Data is read into each array position for(i=0; i<numCouples*2;i++) for(j=0;j<numCouples;j++){ fscanf(ifp, "%d", &ratings[i][j]); //printf("%d",ratings[i][j]); } for(i=0;i<(numCouples*2);i++) free(ratings[i]); free(ratings); Thanks Drew |
| | Hi their, I am learning C and a bit stuck on pointer to strings(I now they dont really exist in c but yeah) which i saw in the absolute guide to c programmig book. I am wondering why this code below doesnt work? If you could answer this question it …  |
 | Help me plz #include <stdio.h> int main ( int argc, char *argv[] ) { if ( argc != 2 ) { printf( "usage: %s filename", argv[0] ); } else { FILE *file = fopen( argv[1], "r" ); if ( file == 0 ) { printf( "Could not open file\n" ); … |
| | Hi, # Problem and Background # I'm trying to compile a program that uses some legacy c code generated using the f2c translator (*version of May 1991 13:06:06*). *decide.c* is the source that contains the translated fortran to c code and *f2c.c* is the header file. Durring compilation I get …  |
| | Hi, Can i ask some help what is the best editor to use in learning C language.... By the way which is which language, should or i must to learn C or C++ ?. Thank you in advance. |
| | I want to make a simulation of logic circuits using basic logic gates in C.User will determine the types of inputs, and the gates.I want to design the circuit as a result.And simulation that produces output according to input values.But I can't do connections between gates.Can you give me advice … |
| | how the compiler searchs for a file when we write fopen("filename","r"); please draw the flowchart of the whole process  |
| | Hi, Can anyone suggest me how to set/create Alpha channal like OxaaRRGGBB for 32Bit BMP image?? I used photoshop, Pixelformer to create 32Bit BMP image with Alpha channel but when i open that image in hex editor nothing is set for Alpha channel.  |
| | #include<stdio.h> #include<conio.h> #include<string.h> struct person { char name[10]; int rno; }; typedef struct person NAME; NAME stud[10], temp[10]; void main() { int no,i; void sort(int N); clrscr(); fflush(stdin); printf("Enter the number of students in the list\n"); scanf("%d",&no); for(i = 0; i < no; i++) { printf("\nEnter the name of person …  |
| | I'm C newbie and i'm having a tough time with my first assignment :sad: The assignment is on creating a Number Puzzle.....apparently it's the newest craze in Toronto and my prof is a big fan....unfortunately I'm trying to read in a file which looks like this: 9,8, ,5,,4,, 7,3,1, ,5 … |
| | #include<conio.h> #include<stdio.h> #include<ctype.h> #include<string.h> int precedence(char c) { switch(c) { case '*': case '/': return(2); case '+': case '-': return(0); } } char *to_postfix(char *infix) { char stack[30],postfix[30]; int i=0,j=0,top=-1; while(infix[i]!=NULL) { if(isalpha(infix[i])||isdigit(infix[i])) { postfix[j++]=infix[i++]; } else if(infix[i]=='(') { stack[++top]=infix[i++]; } else if(infix[i]==')') { while(stack[top]!='(') { postfix[j++]=stack[top--]; } top--; i++; … |
 | why can't we take an array :- a[10000000]?? what is the alternative? |
| | Hi all, I would like to make program reading 300 lines form a file with 24 columns. the 24th column has an integer from 1 to 24, while the others columns are strings. I want to summarize in seperate files this (last) column For example, assdsd, sdsds, asdasda, asda ,asdad, … |
| | Hello all, I am trying to parse a text file that has the following format: 3 1:3,60,3 2:6,70,1 3:3,50,3 I am supposed to take the first line "3", and allocate memory for the 3 lines after it. Then I want to skip the first line, and start parsing and tokenizing … |
| | Hello I am new to C and was wondering if someone could just please explain to me what this function does? Thats all I just need help understanding it. I'm new to C so some one the syntax is tough for me to understand and Im not sure what the … |
| | Hi, I am currently learning how to program, and have a code below: int voltage; printf("Voltage\t\tSoC\tDescription\n"); printf("-------\t\t---\t-----------\n"); for (voltage = voltage_min; voltage <= voltage_max; voltage = voltage + step_size_variable){ printf("%d\t\t%0.3d%%\n", voltage, ((voltage - 3000)/1200)*100); } When I run it, the program outputs only 0.00%s, and is not calculating the voltage … |
| | I have to develop a simple parser, to read "block" of text for example: /TEST {. text .} /TEST_DATA {. infs .} and, I need to read informations of inside of label.... and... the file with have this informations... have a lot of labels, with the same perfil for example: … |
| | **Dudearoo** *Useing Code::Blocks* Heys you guys! ive got a question, i want to know if its possable to read a file name like for example dudearoo.dat and output the name ive got an idea for it, just i dont know how to read file name not coded into the program. … |
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| | Hi, The below is my situation, **Input String :** abc 123$ abc 123$ abc123$abcabcabc 123$ From the above string i want to store the starting index of "123$" code and the "123$" string. When i debugged and found, for first iteration(codecount=0) i'm able to store both index and string but … |
| | can i add two numbers without using arthemetic operators. can any one do it. |
 | Answer by true or false : a) There could be several function calls in a program. **True** False b) Function call can be placed wherever it is required, regardless of the function’s number of calls. **True** False c) There are no conditions on where to place a function prototype. True … |
| | Hi, can we write a function in c, tht can accept any type of array, may tht be int, float, char, struct or of any any kind, as an argument and perform some task of tht like sorting etc. Thank you  |
| | Hello daniweb people! I'm having a few issues with this triangle program. We're supposed to make a few different triangle shapes, including the two i have in this. The first triangle works, but the second triangle displays xxxxxxxxxxxxxxx times infinity. Any ideas on what i'm doing wrong? And another question, … |
| | I am writting a driver for a GPS unit in linux. I can set on the GPS unit what data it should send out it's ethernet port. The data is arranged in structs of different sizes depending on what it is. For example one packet could be for the GPS …  |
| | Can someone please help me on this problem. I am trying to send the updated changes to the sql database when I remove a row. I use the delete method to delete the numbered row through a dataview and then use the upate command to update the changes to the … |
| | Please help me: Following is my program: [CODE]main() { char str[] = "This is //20"; char c[10], *k; int num=0; sscanf(str, "%s%[^//]*//%d",c, &num); printf("%s \n %d \n", c, num); }[/CODE] My intention is to get the first string and last number. I want to ignore the remaining text. There is … |
 | #include<stdio.h> #include<conio.h> struct adj_node { char nam; struct adj_node *adj_next; }; struct node { char name; struct adj_node *down; struct node *next; }; struct node * gins(struct node *); struct node * lins(struct node *); main() { int n,i,j; char c,r; struct node *g,*t; g=malloc(sizeof(struct node)); g->next=NULL; g=gins(g); g=lins(g); getch(); … |
| | int main(void) { char faceValue[2]; char suitValue[2]; //User enters the value of their hole cards. setCardFaceValue(faceValue); setCardSuitValue(suitValue); for(int i=0;i<2;i++) printf("Element %i: %c %c\n",i,faceValue[i],suitValue[i]); return 0; } void setCardFaceValue(char* face) { char card[2][20] = {"left card:","right card:"}; for(int i=0;i<2;i++) { printf("Enter face value for "); for(int x=0;x<19;x++) { printf("%c",card[i][x]); if(card[i][x] == … |
| | hi im studing on i have this work and its giving me this error: main.c||In function 'get_jogos':| main.c|75|warning: implicit declaration of function 'get_endereco'| main.c|75|warning: assignment makes pointer from integer without a cast| main.c|76|warning: assignment makes pointer from integer without a cast| main.c|122|error: conflicting types for 'get_endereco'| main.c|75|note: previous implicit declaration … |
| | How i can make player to dont go inside walls An idea i have is to create a class that draw an model, in that constructor i will add also some informations about model like ID-NAME-Position. So i will create an function that will check if if ( Abs(Player.XYZ - …  |
| | Hello, How cameras works in games? i should add cameras in every object in game? I tryed add camera only in player and follow player but i have problem with other objects, other objects dont change in screen. I mean when i press UP key to move player the player … |
| | need help in this work .... goal This work is to develop a system capable of managing bank accounts. description The banking system consists of a set of two banks where each bank has a manager, responsible for the accounts of that bank. Also part of the banking customers (maximum … |
| | Hi, How do I programatically find the GUID for the Sharepoint List **View** given that the name of the view is known. A user has to input the view name and the program should be able to spit out its GUID. Thanks. |
| | I have a data set in .txt format and want to do some arithmetic operation on the data set using C code. How to do the job? I want to make the text data into a 2D-array. The data set is like this: 1st col - year, 2nd col-January rainfall, …  |
| | Hi, I have a doubt. Suppose we define a pointer or an array of pointers, and pass it to a function, as in like :- char *p; func(p); /*or this way*/ char *p[10]; /*and then pass this array somewhere to a fucntion*/ func(p); Here, in the call to the function, … |
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