#include <stdio.h>

void foon(int n) {
    printf("%d\n", n);
}

int main(void) {
    (int){42};

    //you can use it through a pointer
    int *foo = &((int){42});
    *foo = -1;

    // you can use it as a function parameter
    foon((int){42});

	return 0;
}