Hello all! I have a question on how to run a shell command in C and see the results. So far this is the code i have. When i compile and run it i just get nothing. #include <stdio.h> #include <stdlib.h> int system(const char *string1); int main() { char string1 = "ifconfig"; system(string1); return(0); } Any help with be great. Im not wanting to use ifconfig but i just threw it in there as an example. Thanks in advance. C

You are probably not getting values because ifconfig may not be a command (it isn't on my local box)... You are probably wanting to call 'ipconfig'. There seem to be a few errors in your code that may or may not let it compile... Notice: 1) No need to declare a system function, it should be included... 2) char string1 = "something"; will not work. You need to use *string1 as my example shows below. 3) Pause before and after so you can see if you are getting any results back, even a command error... #include <stdio.h> #include <stdlib.h> int main (void) { char *string1 = "ipconfig"; system("pause"); system(string1); system("pause"); return(0); } IR

ipconfig is a DOS command. If you noticed in the OS on the top im on Linux. ifconfig is the same as ipconfig in the DOS world. In linux im launching it in a shell so no need for the pause. Try again

Ok. I missed your OS... not that it really matters in this case. However, just to pacify the question, I compiled and executed the code below and it works perfectly. #include <iostream> int main (void) { char *cmd = "ls -al"; system(cmd); return 0; }

For the record... I compiled and executed that code in Linux.

hello seeJ, i am not so sure why you need the code int system(const char *string1); in your program, ie. the system function declaration, system() is in stdlib.h; think that is the problem. =)

Hi, I haven't got a compiler with me but this routine could do the job quickly #define MAX_STRING 256 char *IntToBinary (int number) { static char binaryStr[MAX_STRING]; int i; /* Reset string with 0s to set string terminator */ memset(&binaryStr, '\0', sizeof(binaryStr)); for (i = sizeof(int); i > 0; i--) { binaryStr[i] = (number & 1) + '0'; number = number >> 1; } return binaryStr; }