Question

That is my code.

#include <stdio.h>
#include <stdlib.h>

int main ( int argc, char *argv[] )
{
    int i, pid;

for(i = 0; i < atoi(argv[1]); i++) {
    pid = fork();
    if(pid < 0) {
        printf("Error");
        exit(1);
    } else if (pid == 0) {
        printf("Child (%d): %d\n", i + 1, getpid());
        exit(0); 
    } else  {
        wait(NULL);
    }
}

}

The output is like that.

Child (1): 5676
Child (2): 4624
Child (3): 4800
Child (4): 5596
Child (5): 5580

However that is not the expect output in the my homework.
It should be like that. What’s wrong with code? Can someone help me?

Child (2): 4625
Child (1): 4624
Child (3): 4626
Child (4): 4627
Child (5): 4628

Thank You for your help. Now I will try it out.

P.S. Sorry my English is bad. I hope you can understand what I said.

Answer 1

Your code work perfectly on my computer. It can be os dependant.

however you should check if argc is not equal to 1 to avoid segmentation fault if no arguments are given to your program.