#include <stdio.h>

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

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

   //실습 4//
    /*  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); */

    
    printf("5단\n");
    printf("%dx%d=%d\n", 5,1,5*1);
    printf("%dx%d=%d\n", 5,2,5*2);
    printf("%dx%d=%d\n", 5,3,5*3);
    printf("%dx%d=%d\n", 5,4,5*4);
    printf("%dx%d=%d\n", 5,5,5*5);
    printf("%dx%d=%d\n", 5,6,5*6);
    printf("%dx%d=%d\n", 5,7,5*7);
    printf("%dx%d=%d\n", 5,8,5*8);
    printf("%dx%d=%d\n", 5,9,5*9);

    
    return 0;
}

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