#include <stdio.h> /* including standard library */
//#include <windows.h> /* uncomment this for Windows */
 
    if ( condition == true ){
    command;    
    }

#include <stdio.h> /* including standard library */
//#include <windows.h> /* uncomment this for Windows */
 
 
int main( void )
{
  int i;
 
  for (i=0;i<=99;i++){
    if (i==42) {
        printf("I have found the answer: %i\n",i);
    }
}
 
return 0;
}

  output:
  user@host:~$ ./if 
  I have found a answer: 42