C语言中的sprintf（）-yiteyi-C++库

语法：

null

int sprintf(char *str, const char *string,...);

返回：

If successful,it returns the total number of characters written excluding null-character appended in the string, in case of failure a negative number is returned .

sprintf代表“字符串打印”。它不在控制台上打印，而是将输出存储在sprintf中指定的字符缓冲区上。

C

                         // Example program to demonstrate sprintf()                       
                         #include <stdio.h>                       
                         int                                     main()                       
                         {                       
                                                 char                                     buffer[50];                       
                                                 int                                     a = 10, b = 20, c;                       
                                                 c = a + b;                       
                                                 sprintf                                     (buffer,                                     "Sum of %d and %d is %d"                                     , a, b, c);                       
           
                                                 // The string "sum of 10 and 20 is 30" is stored                       
                                                 // into buffer instead of printing on stdout                       
                                                 printf                                     (                                     "%s"                                     , buffer);                       
           
                                                 return                                     0;                       
                         }                       

输出

Sum of 10 and 20 is 30

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