execute a programm
 

hi dear's,
how and where i can execute below code??

int main()
{
system("ls");
return 0;
}

thanks

This is a little C program that does a system call to execute the ls command (pretty not useful, since you can do ls directly from the shell). Anyway, you have to write the code in a text file and then compile it using gcc. Run the resulting executable (a.out by default) and you will get a list of the files in the current working directory.

i run nano main.c and write below code:
#include<stdio.h>
#include<stdlib.h>
int main()
{
printf("\nHello World,\nWelcome to my first C program in Ubuntu Linux\n\n");
return(0);
}
when i run above programm,system show below error ,why??
root@goldengriff:/home/goldengriff/CCPP/HelloWorld# ./main.c.save
./main.c.save: line 1: syntax error near unexpected token `newline'
./main.c.save: line 1: `#include<stdio.h> '

Before running, you have to compile it!!!!!!
Type:

Then you can run it:

when i compile code,below error showed:
test.c:1:21: fatal error: iostream.h: No such file or directory
compilation terminated.

Post the code

#include<iostream>
main()
{

cout<<"hello";
return(0);
}

Here's the right code:

for compiling it:

for running it:

Keep studying!!!!!!!