Question

#include <stdio.h> #include <unistd.h> #include <stdlib.h> #include <string.h> int main(int argc, char* argv[]) { int num; int num_set = 0; int len; int opt; while ((opt = getopt(argc, argv, "vn:o:")) >= 0) { switch (opt) { case 'v': printf("29"); break; case 'n': num_set = 1; num = atoi(optarg); printf("%i", num); break; case 'o': len = strlen(optarg); printf("%i", len); break; } } } if (!num_set) { printf("0"); exit(1); } return 0; Given the code above, what's the output if we run the program prog with the commend "./prog -vo 5038"

          #include <stdio.h>
#include <unistd.h>
#include <stdlib.h>
#include <string.h>
int main(int argc, char* argv[]) {
int num;
int num_set = 0;
int len;
int opt;
while ((opt = getopt(argc, argv, "vn:o:")) >= 0) {
switch (opt) {
case 'v': printf("29"); break;
case 'n': num_set = 1; num = atoi(optarg); printf("%i", num); break;
case 'o': len = strlen(optarg); printf("%i", len); break;
}
}
}
if (!num_set) { printf("0"); exit(1); }
return 0;
Given the code above, what's the output if we run the program prog with the commend
"./prog -vo 5038"

#include <stdio.h>
#include <unistd.h>
#include <stdlib.h>
#include <string.h>
int main(int argc, char* argv[])
int num;
int numset = 0;
int len;
int opt;
while ((opt = getopt(argc, argv, "vn:o:")) >= 0)
switch (opt)
case 'v': printf("29"); break;
case 'n': numset = 1; num = atoi(optarg); printf("%i", num); break;
case 'o': len = strlen(optarg); printf("%i", len); break;

if (!numset) printf("0"); exit(1);
return 0;
Given the code above, what's the output if we run the program prog with the commend
"./prog -vo 5038"

Added by Blanca A.

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