03(Concatenited two strings)

#include <stdio.h>
#include <stdlib.h>

int main(){

    char a[50],b[50];
    int i=0,k=0;

    printf("First String: ");
    gets(a);
    printf("Second String: ");
    gets(b);

    while(a[i]!='\0'){
        i++;
    }

    while(b[k]!='\0'){
        a[i]=b[k];
        i++;
        k++;
    }
    a[i]='\0';
    printf("\nConcatenated String is: %s\n",a);

    return 0;
}