What does strcat mean in C language?

#What does strcat mean in C language?

strcat represents a function for appending strings in C language. Its function is to append string A to the end of string B. The value of string A remains unchanged and the string B becomes longer. When appending, you need to ensure that the B string cannot overflow after adding A.

strcat declaration

The following is the declaration of strcat() function.

char *strcat(char *dest, const char *src)

strcat Parameter

dest -- Points to the target array, which contains a C string and is large enough to accommodate the appended string.

src -- Points to the string to be appended, which will not overwrite the target string.

strcat return value

This function returns a pointer to the final target string dest.

strcat example

#include <stdio.h>
#include <string.h>
 
int main ()
{
   char src[50], dest[50];
 
   strcpy(src,  "This is source");
   strcpy(dest, "This is destination");
 
   strcat(dest, src);
 
   printf("最终的目标字符串： |%s|", dest);
   
   return(0);
}

Compiled and run results

最终的目标字符串： |This is destinationThis is source|

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