#include<stdio.h> int main() { double a,b; printf("Nhap gia tri cua a va b: \n"); scanf("%f", &a); scanf("%f", &b); printf("Tong cua a va b la: a + b =%.2f",a + b); } Ai xem hộ mik đoạn code sao nó chạy lại ra 0 nhỉ

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