C language strcat() function: concatenate a string after the target string

Function name : strcat

Header file : <string.h>

Function : Splice a string after the target string

Function prototype : char *strcat(char *destin, const char *source);

Function : Splice a string after the target string

Parameters : char *destin is the target string array

const char *source is the string array to be spliced

Return value : Returns the pointer to the string array after successful splicing.

Note : Destin must be large enough to accommodate the source, otherwise an overflow error will occur. This function does not generate a new string, but modifies the original string. Therefore, destin can only be a character array, not a string pointed to by a string pointer, because the string pointer points to a string constant, and the constant cannot be modified.

Program example: Concatenate strings to form a new string, and output the new string

 #include<string.h>#include<stdio.h>intmain(void){chardestination[25]={Ilove};char*blank=,*c=www.dotcpp.com;strcat(destination,blank);strcat (destination,c);printf(%sn,destination);return0;}

Running results:

 Ilovewww.dotcpp.com