scanf_s输入单个字符_在C中使用scanf（）输入单个字符

scanf_s输入单个字符

To understand the functionally of scanf() while reading characters, we need to understand its flow, Consider the following statement:

要了解在读取字符时scanf()的功能，我们需要了解其流程，请考虑以下语句：

    scanf ("%c%c%c", &x, &y, &z);

Now, if the input is "a b c", then 'a' will be assigned to variable x, SPACE will be assigned to variable y and 'b' will be assigned to variable z.

现在，如果输入为“ abc” ，则将'a'分配给变量x ，将SPACE分配给变量y ，将'b'分配给变量z 。

Thus, scanf() reads the characters as well as space, tab and new line character.

因此， scanf()读取字符以及空格 ， 制表符和换行符 。

So to read character values after skipping spaces, tabs we need to skip any value between two character values and this is possible by using skip format specifier "%*c".

因此，要在跳过空格后读取字符值，制表符需要跳过两个字符值之间的任何值，这可以通过使用跳过格式说明符“％* c”来实现 。

Program 1: without skipping spaces between characters

程序1：不跳过字符之间的空格

#include <stdio.h>
 
int main(void) 
{
	char x;
	char y;
	char z;
 
	//input
	printf("Enter 3 character values: ");
	scanf ("%c%c%c", &x, &y, &z);
 
	//print 
	printf("x= \'%c\' \n", x);
	printf("y= \'%c\' \n", y);
	printf("z= \'%c\' \n", z);
 
	return 0;
}

Output

输出量

Enter 3 character values: a b c
x= 'a' 
y= ' ' 
z= 'b' 

Here, x contains 'a', y contains ' ' (space) and z contains 'b'.

这里， x包含'a' ， y包含'' (空格)， z包含'b' 。

Program 2: By skipping spaces or any character between characters

程序2：通过跳过空格或字符之间的任何字符

#include <stdio.h>
 
int main(void) 
{
	char x;
	char y;
	char z;
 
	//input
	printf("Enter 3 character values: ");
	scanf ("%c%*c%c%*c%c", &x, &y, &z);
 
	//print 
	printf("x= \'%c\' \n", x);
	printf("y= \'%c\' \n", y);
	printf("z= \'%c\' \n", z);
 
	return 0;
}

Output

输出量

Enter 3 character values: a b c
x= 'a' 
y= 'b' 
z= 'c' 

翻译自: https://www.includehelp.com/c-programs/input-individual-characters-using-scanf.aspx

scanf_s输入单个字符