C++ 编程/代码/标准 C 库/函数/isalnum
| 语法 |
#include <cctype>
int isalnum( int ch );
|
isalnum() 函数如果它的参数是数字或字母，则返回非零值。否则，返回零。
char c;
scanf( "%c", &c );
if( isalnum(c) )
printf( "You entered the alphanumeric character %c\n", c );
| 语法 |
#include <cctype>
int isalnum( int ch );
|
isalnum() 函数如果它的参数是数字或字母，则返回非零值。否则，返回零。
char c;
scanf( "%c", &c );
if( isalnum(c) )
printf( "You entered the alphanumeric character %c\n", c );