Unknown scanf, unknown scanf

Unknown scanf, unknown scanf
This is an article for Tan Bai.

A few days ago, I saw someone in the group saying that tan haoqiang's book is not that bad and there are still many mistakes. I looked at his error.

1 # include <stdio. h> 2 int main () {3 int a, B; 4 scanf ("% d, % d", & a, & B ); 5 printf ("% d", a, B); 6}

The man said that some of the Code provided in the book had problems with basic input:

Why does 20 get in with only 15 inputs?

First, initialize a and B to 0 to check the problem.

The result shows that the value of a has changed, but the value of B is 0, which means that B is not stored. Why?

This is because,The input of the scanf function must be the same as the format you set earlier.For example

Only when your input matches your set "% d, % d" can you store it correctly