strcat(): String Concatenation in C Programming

String handling function strcat() is used to concatenate two strings. Concatenation is the process of merging content of one string to another string. Function strcat(str1, str2) concatenates content of string str2 after content of string str1.

strcat() Syntax

strcat( string1, string2);

strcat() Example

#include<stdio.h>
#include<string.h>

int main()
{
 char str1[50], str2[50];

 printf("Enter first string:\n");
 gets(str1);
 printf("Enter second string:\n");
 gets(str2);
 strcat(str1,str2);
 printf("Concatenated string is: %s", str1);

 return 0;
}

strcat() Program Output

Enter first string:
Ram↲
Enter second String:
Shyam↲
Concatenated string is: RamShyam


Note: ↲ indicates ENTER is pressed.