Add two variables

You can add the values in two boxes: a + b.

Set a to 4 and b to 5. Print a + b. It shows 9.

#include <stdio.h>

int main(void) {
    int a = 4;
    int b = 5;
    printf("%d\n", 0);
    return 0;
}

Click Run to see the output here.

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