//iman design/
#include <stdio.h>
#include <conio.h>
#include <math.h>
float f(float i)
{
return(pow(i,2));
}
int main()
{
int a,b,n;
float i,x,sum=0;
printf("Please inter a for [a,b] : ");
scanf("%d",&a);
printf("Please inter b for [a,b] : ");
scanf("%d",&b);
printf("Please inter n : ");
scanf("%d",&n);
for(i=0;i<500;i++)
printf("\b");
x=(b-a)/n;
for(i=a;i<b;i+=x)
sum+=((f(i)+f(i+x))*x)/2;
printf("Antegral y=x^2 in [a,b] is: %f\n //All rights reserved by mohammad reza iman//",sum);
getche;
}