iostream isn't in C. I think you have quotes where you want <> in your #include for math.h, and you can't use "using namespace std" in C. Maybe you're not using a C compiler.

The problem with the decimals is that you've declared all of your variables as integers and integers can't hold decimals. Try declaring x, y, d as doubles or floats.

I'm also suspicious of this line:

C Syntax (Toggle Plain Text)

d = (b*b-4*a*c)^(1/2);

d = (b*b-4*a*c)^(1/2);

^ is the bitwise XOR operator and I think (1 / 2) is going to be 0 due to integer division.

i am still confused here is my program so far do you see any changes?

C Syntax (Toggle Plain Text)

#include <iostream>
#include <stdio.h>
#include "simpio.h"
#include "strlib.h"
#include "random.h"
#include "math.h"
using namespace std;
 
int main(double d, double, x, double, y)
{
	int a, b, c, x, y, d;
 
	printf("Enter A: ");
	a = GetInteger();
 
	printf("Enter B: ");
	b = GetInteger();
 
	printf("Enter C: ");
	c = GetInteger();
 
	d = (b*b-4*a*c)^(1/2);
	x = ((-b - d)/(2.0*a));
	y = ((-b + d)/(2.0*a));
 
 
	if (x == y)
		printf("There is one solution: %f\n", x);
	else if (x != y)
		printf("There are two solutions: %f and %f\n", x, y);
	else if (d <= 0)
		printf("There are no solutions.\n");
	else
		printf("There are no solutions.\n");
 
	system("pause");
	return 0;
}

#include <iostream> #include <stdio.h> #include "simpio.h" #include "strlib.h" #include "random.h" #include "math.h" using namespace std; int main(double d, double, x, double, y) { int a, b, c, x, y, d; printf("Enter A: "); a = GetInteger(); printf("Enter B: "); b = GetInteger(); printf("Enter C: "); c = GetInteger(); d = (b*b-4*a*c)^(1/2); x = ((-b - d)/(2.0*a)); y = ((-b + d)/(2.0*a)); if (x == y) printf("There is one solution: %f\n", x); else if (x != y) printf("There are two solutions: %f and %f\n", x, y); else if (d <= 0) printf("There are no solutions.\n"); else printf("There are no solutions.\n"); system("pause"); return 0; }