#include <stdio.h>

int main() {

    //실습1//
    printf("5*3/2\n"); 
    printf("7*7*3.14\n"); 
    printf("4.5*4.5*4.5\n"); */

    //실습3//
    printf("%d\n", 5+3);
    printf("%d\n", 7*2-4);
    printf("%d\n", 15/2);

    
     return 0;
}

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