#include <iostream>

void function(int i){
    int a;
    switch (i){
        case 1:  a = 1;
            break;
        case 2: a = 2;
            break;
        case 3: a =3;
            break;
        default:a = 10000;
    }
}

int main() {

    int i = 10;
    function(i);

    return 0;
}

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