Run is_ascii on Command Line Argument

Task

Implement the main function

• is_ascii function is provided
• Accept a single command line argument (string)
• Call is_ascii on that argument
• Print 1 if the string is ASCII, or 0 otherwise

---

Test

$ ./is_ascii hello
1
$ ./is_ascii café
0
$ ./is_ascii ASCII
1
$ ./is_ascii 😊
0

---

Code

#include <stdio.h>
#include <stdlib.h>
#include <stdint.h>
#include <string.h>
int is_ascii(char* str) {
    while (*str) {
        if ((unsigned char)*str > 127) {
            return 0;
        }
        str++;
    }
    return 1;
}
 
int main(int argc, char** argv) {
    printf("%d\n", is_ascii(argv[1]));
    return 0;
}