VD don gian dung Struct

#include <stdio.h>
#include <conio.h>
struct tamgiac
{
    float a,b,c;
} tg;
void main(){
    float tong;
    printf("Nhap 3 cach trong tam giac: ");
    scanf("%f%f%f",&tg.a,&tg.b,&tg.c);
    tong = tg.a + tg.b + tg.c;
    printf("Tong 3 canh la %f",tong);
}