sscanf用法

说明：函数功能是将一个字符串的内容按格式输入，遇到第一个空白字符会结束，可用于字符转数字，类似于atoi。

源码： 

/* SSCANF.C: This program uses sscanf to read data items

 * from a string named tokenstring, then displays them.

 */

#include

void main( void )

{

   char  tokenstring[] = "15 12 14...";

   char  s[81];

   char  c;

   int   i;

   float fp;

   /* Input various data from tokenstring: */

   sscanf( tokenstring, "%s", s );

   sscanf( tokenstring, "%c", &c );

   sscanf( tokenstring, "%d", &i );

   sscanf( tokenstring, "%f", &fp );

   /* Output the data read */

   printf( "String    = %s\n", s );

   printf( "Character = %c\n", c );

   printf( "Integer:  = %d\n", i );

   printf( "Real:     = %f\n", fp );

}

Output

String    = 15

Character = 1

Integer:  = 15

Real:     = 15.000000