#include <stdio.h>
void main(){
int a, b; // khai bao 2 so nguyen
printf("Hay nhap a = ");
scanf("%d", &a); // nhap so nguyen a
printf("Hay nhap b = ");
scanf("%d", &b); // nhap so nguyen b
float tbc = (float)(a + b)/2; // tinh trung binh cong
printf("Ket qua TBC: (%d + %d)/2 = %0.2f",a, b, tbc); // thong bao ket qua
}