C Program to concatenation of two sting
These programs concatenate one to other string to the another string using strcat function from the string.h library and without strcat function. Let's take an example, suppose "wel" is a string and "come" is another string after concatenating the result will be "welcome".
String concate c program
#include <stdio.h> #include <conio.h> #include <string.h> void main() { char z[90], x[90]; printf("Enter 1st string\n"); gets(z); printf("Enter 2nd string\n"); gets(x); strcat(x, z); printf("String: %s\n", x); getch(); }
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Output of program

In this example, enter two strings using gets function and after that pass both string variables to the strcat function, strcat function return concatenated string in the first argument (x).