Euler’s Method
#include<stdio.h>
#include<conio.h>
#define F(x) 3*x*x+1
int main (void)
{
float a,c,b,h,x,f,i,y2;
clrscr();
printf("Enter the value of a & c as y(a)=c: ");
scanf("%f %f",&a,&c);
printf("Enter the value of b as y(b)=?");
scanf("%f",&b);
printf("Enter the value of h: ");
scanf("%f",&h);
x=a;
for(i=a;i<b;i=i+h)
{
f= F(x);
y2=c+ h*f;
c=y2;
x=x+h;
}
printf("\nRequired ans: %f",y2);
getch();
return 0;
}