What is the output of the following C program?
#include <stdio.h>
int main(void) {
int a = 5, b = 2;
printf("%d", a / b + a % b);
return 0;
}Integer division 5 / 2 = 2. Modulo remainder 5 % 2 = 1. Total sum = 2 + 1 = 3.
What is the value of 'x' after loop termination?
#include <stdio.h>
int main(void) {
int x = 1;
while (x < 20) {
x *= 2;
}
printf("%d", x);
return 0;
}x sequence: 1 -> 2 -> 4 -> 8 -> 16 -> 32. At 32, x < 20 becomes false, terminating loop with x = 32.
What is the output of 'printf("%d", 1 << 4);'?
Left shifting 1 by 4 bits computes 1 * $2^4$ = 16.
What is the total number of times 'Hello' is printed by the program?
#include <stdio.h>
int main(void) {
for (int i = 0; i < 3; i++) {
for (int j = 0; j < 4; j++) {
printf("Hello
");
}
}
return 0;
}Outer loop runs 3 times, inner loop runs 4 times per outer iteration. Total executions = 3 * 4 = 12.
What value is printed by this recursive program?
#include <stdio.h>
int f(int n) {
if (n <= 1) return 1;
return f(n - 1) + f(n - 2);
}
int main(void) {
printf("%d", f(5));
return 0;
}Fibonacci sequence with f(0)=1, f(1)=1: f(2)=2, f(3)=3, f(4)=5, f(5)=8.