Struktur belajar 

#include <stdio.h>

int main() {
    int num1, num2, hasil;
    
    printf("masukkan angka pertama: \n");
    scanf("%d", &num1);
    printf("masukkan angka kedua: \n");
    scanf("%d", &num2);
    
    hasil = num1 + num2;
    printf("%d + %d =  %d\n", num1, num2, hasil);
    hasil = num1 - num2;
    printf("%d - %d =  %d\n", num1, num2, hasil);
    hasil = num1 * num2;
    printf("%d * %d =  %d\n", num1, num2, hasil);
    hasil = num1 / num2;
    printf("%d / %d =  %d\n", num1, num2, hasil);
   

    return 0;

}