Please rewrite this C code that concatenates two strings as a function. Do not use strcat

/* C program to concatenate two strings without * using standard library function strcat() */ #include  int main() { char str1[50], str2[50], i, j; printf(" Enter first string: "); scanf("%s",str1); printf(" Enter second string: "); scanf("%s",str2); /* This loop is to store the length of str1 in i * It just counts the number of characters in str1 * You can also use strlen instead of this. */ for(i=0; str1[i]!='\0'; ++i); /* This loop would concatenate the string str2 at * the end of str1 */ for(j=0; str2[j]!='\0'; ++j, ++i) { str1[i]=str2[j]; } // \0 represents end of string str1[i]='\0'; printf(" Output: %s",str1); return 0; }