#include <stdio.h>

int main() {
 //실습//
   /* printf("5*3/2\n");
    printf("7*7*3.14\n");
    printf("4.5*4.5\n");*/

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

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

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