C program to concatenate two strings

program:

#include <stdio.h>
#include <string.h>
int main()
{
   char str1[100], str2[100];
   printf("Enter the first string\n");
   gets(str1); // Reading first string
   printf("Enter the second string\n");
   gets(str2); // Reading second string
   // strcat is use to Concatenates two strings
   strcat(str1,str2);
   printf(" obtained string on concatenation is:%s\n",str1);
   return 0;
}

output:

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