The use sprintf

The desired result can be output to the specified string, but also as a buffer, but only printf output to the command line: Function srpintf () function is very powerful.

Header files: stdio.h

Function: format string, writing data formatted string.

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

Parameters: (1) buffer: char type is a pointer, a pointer to a string written; (2) format: format string, i.e., the desired format in the program; (3) argument: an optional parameter can be any type of data;

#include<stdio.h>  
int main()  
{  
    char buffer[10];  
    char *a = "1234";  
    char *b = "5678";  
    sprintf(buffer, "%s%s", a, b);  
    printf("%s\n", buffer);  
    return 0;  
}