String Concatenate Using While

#include <stdio.h>
#include <string.h>
int main()

{   
    char s1[100], s2[100];
    int i, j=0;;
    printf("\n Please Enter the First String : ");
    gets(s1);
    printf("\n Please Enter the Second String : ");
    gets(s2);

    i = strlen(s1);

    while( s2[j]!='\0')   
      {
        s1[i] = s2[j];
        i++;
        j++;
    }
    
    s1[i] = '\0';
    
    printf("\n String after the Concatenate = ");
    puts(s1);
    return 0;
}

     

           

Note: Need to be arranged in compiler after copied

   

 OutPut:

Please Enter the First String : Hello Please Enter the Second String : World String after the Concatenate = Hello World