What happens if you try to compile and run this program?
#include <stdio.h>
int main (int argc, char *argv[]) {
int i = 7 || 0 ;
printf("%d", !! i);
return 0;
}
Choose the right answer:

• A. The program outputs 1
• B. The program outputs 0
• C. The program outputs 7
• D. Compilation fails
• E. The program outputs -1

說明：（僅 Fast2test 成員可見）

What happens if you try to compile and run this program?
#include <stdio.h>
#include <string.h>
struct STR {
int i;
char c[20];
float f;
};
int main (int argc, char *argv[]) {
struct STR str = { 1, "Hello", 3 };
printf("%d", str.i + strlen(str.c));
return 0;
}
Choose the right answer:

• A. The program outputs 5
• B. The program outputs 1
• C. The program outputs 4
• D. The program outputs 6
• E. Compilation fails

說明：（僅 Fast2test 成員可見）

Assume that ints are 32-bit wide.
What happens if you try to compile and run this program?
#include <stdio.h>
typedef union {
int i;
int j;
int k;
} uni;
int main (int argc, char *argv[]) {
uni s;
s.i = 3;
s.j = 2;
s.k = 1;
printf("%d",s.k * (s.i - s.j));
return 0;
}
Choose the right answer:

• A. The program outputs 9
• B. The program outputs 0
• C. Compilation fails
• D. The program outputs 3
• E. Execution fails

說明：（僅 Fast2test 成員可見）

What happens if you try to compile and run this program?
#include <stdio.h>
#include <stdlib.h>
int main (int argc, char *argv[]) {
double x = 1234567890.0;
printf ("%f",x);
return 0;
}
Choose the most precise answer:

• A. The program outputs 1234567900.0
• B. The program outputs 1234567890.0
• C. The program outputs a value greater than 1234500000.0 and less than 1234600000.0
• D. Compilation fails
• E. Execution fails

說明：（僅 Fast2test 成員可見）

What happens if you try to compile and run this program?
#include <stdio.h>
int *fun(int *t) {
return t + 4;
}
int main (void) {
int arr[] = { 4, 3, 2, 1, 0 };
int *ptr;
ptr = fun (arr - 3);
printf("%d \n", ptr[2]);
return 0;
}
Choose the right answer:

• A. The program outputs 5
• B. The program outputs 2
• C. The program outputs 1
• D. The program outputs 4
• E. The program outputs 3

說明：（僅 Fast2test 成員可見）