#include <stdio.h>
 
int main() {
    
    //실습1//
    printf("5*3/2\n");
    printf("7*7*3.14\n");
    printf("4.5*4.5*4.5/2\n");
        
    //실습2//
    printf("%d\n", 5+5);
    printf("%d\n", 567*7);
    printf("%d\n", 10/2);
    printf("5*3/2\n");

    //실습3//
    printf("%d\n",5+3);
    printf("%d\n",7*2-4);
    printf("%f\n",15.0/2.0);

    //실습4//
    printf("5+3=%d\n",5+3);
    printf("7*2-4의 결과는 %d입니다.\n",7*2-4);
    printf("15나누기2의 결과는 %d입니다.\n",15/2);
         return 0;
}

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