#include <stdio.h>

int main() {
    //실습1//
    /* printf("5*3/2\n");
    printf("7*7*3.14/2\n");
    printf("4.5*4.5*4.5/2\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("7*2-4의 결과는 %d입니다.\n",7*2-4);
    printf("15 나누기 2의 결과는 %d입니다.\n",15/2);

    return 0;
}

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