strcat() in C

 Imagine you have two strings: one says "Hello, " and the other "World!".

 Now, you want to put them together to form a single string that says "Hello, world!".

 This is exactly what strcat() does in C.

 It helps you to merge, or concatenate, two strings into one.

Example:

// program for strcat()
#include<stdio.h>
#include<string.h>
				
int main() {

    char firstString[50] = "Hello, ";

    char secondString[] = "world!";

    strcat(firstString, secondString); // Appends secondString to the end of firstString

    printf("Merged string: %s\n", firstString);

    return 0;
}
									
								

Output:

Merged string: Hello, world!

Advantages of strcat() 

 Convenience: strcat() makes string concatenation easy and straightforward.

 Efficiency: It efficiently merges strings without the need for additional loops or logic.

 Flexibility: It can merge strings of variable lengths, making it versatile for different situations.

 Standard Library Function: strcat() is part of the standard C library, ensuring compatibility across different systems and compilers.