I am having two minor problems in this code but i am unable to get them. i have mentioned on the places the compiler is giving error.There are two of them given below: #include<stdio.h> #include<conio.h> #include<stdlib.h> #define SIZE 100 int count; void menu(void); void input(int[]); void print(int[]); void insert(int[]); void delete...
How do I use autoconf macros to conditionally change values in a configure-script or Makefile it ouputs through AC_OUTPUT. The goal is to use AC_CANONICAL_TARGET, or some other way, to identify that I'm on OS X and then allow my Makefiles to adapt the LDFLAGS by removing -shared and replacing -soname with -dylib_install_name. So I ba...
I have the following code. It gives me a problem with free memory, but I haven't figured out what exactly the problem is. It seems that getpwuid(buf->st_uid); is not getting along with readdir(dirh); or with stat functions. Does anyone know why? buf = (struct stat*) malloc(sizeof(struct stat)); for (dirp[i] = readdir(dirh); dirp...
I want to use the htonl function in my ruby c extension, but don't want to use any of the other internet stuff that comes with it. What would be the most minimalistic file to #include that is still portable? Looking through the header files on my computer, I can see that either machine/endian.h or sys/_endian.h would let me use them, alt...
Corrected code: int strrindex(char *s, char *t) { int i, j, k, p; i = -1; for (k = 0; s[k] != '\0'; k++) { if (strlen(s) < strlen(t)) break; if (s[k] == t[0]) { for (p = k; s[p] != '\0'; p++) { j = p; while (s[j] != '\0' && s[j] == t[j-k] && t[j-k] != '\0') { j++; } if (t[j-k] != '\0') { break; ...
Possible Duplicate: The Definitive C Book Guide and List A friend of mine needs to learn C as a prerequisite for a course he is taking. My knee-jerk response was K&R, but this is a 20-year old book we're talking about. There are quite a few newer books on C, but I haven't read any of them and don't have an opinion. Any recomme...
Possible Duplicate: Sizeof an array in the C programming language? Why is the size of my int array changing when passed into a function? I have this in my main: int numbers[1]; numbers[0] = 1; printf("numbers size %i", sizeof(numbers)); printSize(numbers); return 0; and this is the printSize method void printSize(int numb...
The compiler complains about this: int randomSort(id obj1, id obj2, void *context) { // first line return (arc4random()%3 - 1); } in first line: _cmd undeclared and 'self' undeclared (first use in this function) When I not use arc4random() here, i.e. just return 1, everything is fine. I have other c functions in th...
#include<stdio.h> #include<conio.h> char pw[25],ch; int i; main() { printf("\n\nEnter password"); while(1) { if(i<0) i=0; ch=getch(); if(ch==13) break; if(ch==8) { putch('\b'); putch(NULL); putch('\b'); -i; continu...
What type for array index in C99 should be used? It have to work on LP32, ILP32, ILP64, LP64, LLP64 and more. It doesn't have to be a C89 type. There are 5 candidates: size_t ptrdiff_t intptr_t / uintptr_t int_fast*_t / uint_fast*_t int_least*_t / uint_least*_t There is simple code to better illustrate problem. What is the best type...
Hello, I need to run function in another thread then main form: I have a job_func: void job_func(GIOSchedulerJob *job, GCancellable *cancellable, gpointer user_data) { MainWin* mw = (MainWin*)user_data; while( g_cancellable_is_cancelled(mw->generator_cancellable) == FALSE) { loading (NULL, mw); } } Then load...
1) For which datatypes must I allocate memory with malloc? For types like structs, pointers, except basic datatypes, like int For all types? 2) Why can I run this code? Why does it not crash? I assumed that I need to allocate memory for the struct first. #include <stdio.h> #include <stdlib.h> typedef unsigned int uint32; typedef st...
Hi, I am going through the source code for the above project and I don't understand the following lines of code can anyone help explain it to me please? I am trying to get the code to work with color images as it currently only works with greyscale images. I have the main methods working however the filters only get applied to the top qu...
Hi, I am trying to study C, and I am running in to troubles using char* and char arrays. I am using a generic hash-set container from a library (which I don't want to describe in details). This library includes the function void *HashSetLookup(hashset *h, const void *elemAddr); which I have to use to search in the hash set to see if t...
I was studying the Kernel Architecture and its programming to get the idea about Kernel. I know C programming but the structures and pointers mentioned in kernel code are going over my head. Like below int irq = regs.orig_eax & 0xff; asmlinkage int handle_IRQ_event(unsigned int irq, struct pt_regs *regs, ...
Is it better to sort then binary search or simply linear search? Thanks ...
Hello! Do you know of any extension (desired free) for VS (or VCPP) 10 that adds C projects productivity (i.e. templates, headers control, syntax highlighting etc.)? Thanks ...
what should I do to master the c programming language ...
How do I force const-ness of the memory pointed to by obj->val1 in the function fn? #include <iostream> struct foo { int* val1; int* val2; int* val3; }; void fn( const foo* obj ) { // I don't want to be able to change the integer that val1 points to //obj->val1 = new int[20]; // I can't change the pointer, *...
Basically I do something like this: GenerateLinePoly(Contour[i].DrawingPoints, Contour[i].Outline.OutlineWidth); Contour[i].Outline.OutlineSize = OutlineVec.size() / 2; glBindBufferARB(GL_ARRAY_BUFFER_ARB,Contour[i].Outline.OutlineVBO); glBufferDataARB(GL_ARRAY_BUFFER_ARB,sizeof(GLfloat) * OutlineVec.size(), &Outlin...