sprintf 用法(sprintf_s)

函数原型：

int sprintf( char *buffer, const char *format [,argument] ... )

注意这里的buffer指针 指向的是格式化字符后写入的首地址；

sprintf使用实例： 

// crt_sprintf.c // compile with: /W1 // This program uses sprintf to format various // data and place them in the string named buffer. #include <stdio.h> int main( void ) { char buffer[200], s[] = "computer", c = 'l'; int i = 35, j; float fp = 1.7320534f; // Format and print various data: j = sprintf( buffer, " String: %s\n", s ); // C4996 j += sprintf( buffer + j, " Character: %c\n", c ); // C4996 j += sprintf( buffer + j, " Integer: %d\n", i ); // C4996 j += sprintf( buffer + j, " Real: %f\n", fp );// C4996 // Note: sprintf is deprecated; consider using sprintf_s instead printf( "Output:\n%s\ncharacter count = %d\n", buffer, j ); }

Output

Output:
   String:    computer
   Character: l
   Integer:   35
   Real:      1.732053

character count = 79