#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); */

   //실습4//
    printf("5+3=%d\n",5+3);
    printf("7+2-4의 결과는 %d입니다.\n",7*2-4);
    printf("15나누기 2의 결과는 %f입니다.\n",15.0/2.0);  
    
    return 0;
}

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