Global vs Local

Lab C Intermediate 20 points

A global int calls = 0; counts how many times add(a, b) is called. Read n pairs, print each sum, then calls=N. Inside main, a local variable named total must not clash with anything global.

Input

n, then n lines a b.

Output

n + 1 lines.

Example

Input

Output

3
7
11
calls=3

Sample input available Sample output available

Editor

Hints

Globals are visible in every function; locals only in their block.

Solution explanation

Use globals sparingly - passing values as parameters keeps functions independent.

Show solution

#include <stdio.h>

int calls = 0;

int add(int a, int b) {
    calls++;
    return a + b;
}

int main() {
    int n, a, b;
    scanf("%d", &n);
    for (int i = 0; i < n; i++) {
        scanf("%d %d", &a, &b);
        int total = add(a, b);
        printf("%d\n", total);
    }
    printf("calls=%d\n", calls);
    return 0;
}

Output

Answer