Concatenation of string in c without built in function

 

Concatenation of string in c without built in function

#include<stdio.h>

void concat(char s3[],char s4[])

{

    int i,l1,l2,j;  //ujjal roy

    l1=strlen(s3);

    l2=strlen(s4);

    for(i=l1,j=0;i<l1+l2;i++,j++) s3[i]=s4[j];

    s3[i]='\0';

    printf("%s\n",s3);

}

int main()

{

    char s1[200],s2[100];

    gets(s1);

    gets(s2);

    concat(s1,s2);

    return 0;

}