#include<stdio.h>
 
 
void str_cat_101(char const input1[], char const input2[], char result[])
{
   int i, j;
   for (i = 0; input1[i] != '\0'; i++)
   {
      result[i] = input1[i];
   }
   result[i] = '\0';
   for (j = 0; input2[j] != '\0'; j++, i++) // notice i++
   {
      result[i] = input2[j];   // notice `i` in index with result 
   } 
   result[i] = '\0'; 
}
int main(){
    char* input1="one";
	char* input2="two";
	char result[10]={0};
	str_cat_101(input1, input2, result);
	printf("\n result = %s\n", result);
	return 1;	
}

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