什么是在scanf函数的2D％ [英] what is the %2d in scanf

问题描述

我知道这句话的结果的含义scanf函数（％d个，＆安培; X）; //读取的变量x一个整数，并将其存储结果
但什么是该做的语句搜索 scanf函数（％2D，＆安培; X）; 结果
我试图寻找这一点，但无法找到答案。我想知道啥子内部也发生了。

I know the meaning of this statement
scanf("%d",&x); //Reads an integer and stores it in the variable x
But what does this statement do
scanf("%2d",&x);
I tried searching for this, but could not find an answer. I want to know waht happens internally also.

推荐答案

这是两位数字编号：

int n = 0;
scanf ("%2d", &n);
printf ("-> %d\n", n);

12
- > 12

12 -> 12

88657
- > 88

88657 -> 88

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