A01569420

#include <stdio.h>
#include <unistd.h>
#include <sys/types.h>
#include <sys/wait.h>
#include <string.h>

void execute_argument(char* argument) {
    pid_t pid;
    pid = fork();

    if (pid < 0) {
        fprintf(stderr, "Fork failed\n");
        return;
    } else if (pid == 0) {
        
        execlp("ls", "-l", NULL);
        fprintf(stderr, "Exec failed\n");
        return;
    } else {
    
        int status;
        waitpid(pid, &status, 0);
    }
}

int main() {
    char argument[100];

    while (1) {
        printf("osh> ls");
        fgets(argument, sizeof(argument), stdin);

       
        argument[strlen(argument) - 1] = '\0';

        if (strcmp(argument, "exit") == 0) {
            break;  
        }

        execute_argument(argument);
    }

    return 0;
}