4

Unable to dynamically create an array of params for execv in C

view full story
linux-howto

http://www.linuxquestions.org – Hello everyone and thank you for looking at my little problem. I haven't programmed in C for a while, so I am trying to remember certain aspects of syntax. I have a program that will fork and exec other programs. Those programs will be specified on the command line as follows: ./main "prog1 arg arg ..." "prog2 arg arg ..." Here is the main snippet: int countChar(char* s, char c) { int cnt = 0; int len = strlen(s); for(int i = 0; i < len; i++) {if(s[i] == c) cnt++; } return cnt;} char** stringToArray(char* s, int *size) { char **array = (ch (HowTos)

robot1's picture
Submitted by robot1 on 01/06/2011 – Made popular on 01/06/2011

Stories similar to Unable to dynamically create an array of params for execv in C

#define BUFSIZE 256

int escape_single_quotes(char *to, char *from, int max) { int l= 0;

for (;*from;from++) { switch (*from) { case '\'': if (l>=max-4) return 0; // not enough space for escaped chars! // replace ' with '\'' *(to++)= '\''; *(to++)= '\\'; *(to++)= '\''; l += 3; default: if (l>=max-1) return 0; //

Problem: Use a 2 dimensional static array with 3 rows & 2 columns to the course number and number grade you have received in that course. The program should have three functions called get information, printinformation, and convert. You need to send array to getinformation and printinformation functions as parameters. The get information will ask for course no.

address of char array 2 years 24 weeks ago

I have a question of char array argument passing.

Hi everyone,I got error when I run this program. I am using ubuntu 11.10. This is my program.

So my code is

#include <stdio.h> #include <string.h> main() { char *a="123456789abcdef"; char b[10]; int i=0; while((b[i]=a[i])!='\0') ++i; printf("%s %d\n",b,strlen(b); return 0; }

The code exists a array overflow with array b, but when I compile it with gcc(version 4.6) in my system (64bit ubuntu 12.04 lts),it succeed. The output of this program is

Code a relic 3 years 18 weeks ago

Code of baul :)

Code: /*  * Hanx [Proyecto Fedora Peru] wth Code  * crc.c - app  *  * This program is private version, for anti-educational purposes and without any  * explicit or implicit warranty; in no event shall the author or  * contributors be liable for any direct, indirect or incidetal damages

make command for an application 2 years 43 weeks ago

hello

i have made a small program to find the md5 checksum of a string.i am using xshell to compile the program. Code: #include <string.h>

#include <stdio.h> #include <sys/types.h> #include <md5.h>

int main(int argc, char * argv) {         MD5_CTX context;

character arrays in C 2 years 28 weeks ago

I was reading Kernighan Ritchie book chapter 4 which deals with character pointers. I am not able to understand following different type of declarations

Code: char aname[][15] = { "Illegal month", "Jan", "Feb", "Mar" }; char amessage[] = "now is the time"; char *name[] = { "Illegal month", "Jan", "Feb", "Mar

Asm Code problems 2 years 37 weeks ago

Hi everyone, I'm making a multimedia library to speedup vector and matrix computation.

But I'm getting a strange error, in this code

Quote:

void memcpy_unrolled_sse2(void *dst, void *src, int size) { int i = 0, length = (size/16)*16, length2 = (size/32)*32, length4 = (size/64)*64, length8 = (size/128)*128;

char *a = (char *)src; char *b = (char *)dst;