Question

How to use static variable in C

Answer 1

#include <stdio.h>

int add(int n) {
    static int sum = 0;
    sum += n;
    
    return sum;
}

int main() {
    printf("%d\n", add(2));
    printf("%d\n", add(2));
    printf("%d\n", add(2));
    printf("%d\n", add(2));
    
    return 0;
}



/*
run:

2
4
6
8

*/

 

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