Use strcat function to concatenate two strings

Syntax

C strcat function has the following syntax.

Header

C strcat function is from header file string.h.

Description

C strcat function concatenates a copy of *str2 to *str1 and terminates *str1 with a null and returns *str1.

You have to ensure that str1 is large enough to hold both its original contents and those of str2.

Example

Use C strcat function to concatenate two strings.

#include <stdio.h>
#include <string.h>
//from  w w w.java 2s. co m
int main(void)
{
  char s1[80], s2[80];

  printf("s1:");
  gets(s1);
  printf("s2:");
  gets(s2);

  strcat(s2, s1);
  printf(s2);

  return 0;
}

The code above generates the following result.