Update README.md

#include<stdio.h>
 
 // variable declaration
int N=0;
int c=0;
int yn=0;
int y;
int x;
int ans;

//main function
int main()
{
printf("type the number of test cases: ");
scanf("%d",&N);   //read the number inputted by keyboard
printf("%d\n",N);
cases();         //call function cases
}

int cases()
{

if(c<N){
c=c+1;    //raise the counter
printf("how many numbers will you type on next line?: ");
scanf("%d",&x);  //read the number inputted by keyboard
printf("%d\n",x);
numbers();      //call function numbers
cases();
}
else {
c=0;        //set counter to zero
return(x);
}
}

int numbers()
{
if(yn<x){
yn=yn+1;
printf("type the number: ");
scanf("%d",&y);          //read the number inputted by keyboard
printf("%d \n",y);
y=y*y;             //square of the number
ans=ans+y;        // save the previous result and add the new result
numbers();
}
else {
printf("answer: ");
printf("%d \n",ans);  //print the answer
ans=0;            //set counter to zero
yn=0;             //set counter to zero
return(yn);
}
}