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diff --git a/assignments/03-quadratic-equation.c b/assignments/03-quadratic-equation.c
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+/* Quadratic equation and the nature of the roots */
+
+#include <stdio.h>
+#include <math.h>
+
+int main(void)
+{
+	float a, b, c, discr, x1, x2;
+	printf("Finding the roots and the nature of them of quadratic equation\n"
+		"\t\tax^2+bx+c=0\n\n");
+	printf("Enter a: ");
+	scanf("%f", &a);
+	printf("Enter b: ");
+	scanf("%f", &b);
+	printf("Enter c: ");
+	scanf("%f", &c);
+	if (a == 0) {
+		printf("In a quadratic equation, a can not be zero.\n");
+		return 0;
+	}
+	discr = b * b - 4 * a * c;
+	if (discr < 0) {
+		printf("The roots of this equation are imaginary.\n");
+		return 0;
+	}
+	if (discr == 0) {
+		printf("The roots of this equation are real and equal.\n");
+	}
+	if (discr > 0) {
+		printf("The roots of this equation are real and distinct.\n");
+	}
+	x1 = (-b + sqrt(discr)) / (2 * a);
+	x2 = (-b - sqrt(discr)) / (2 * a);
+	printf("The roots are: %f and %f\n", x1, x2);
+	return 0;
+}
+
+/*
+Output:
+Set 1:
+Finding the roots and the nature of them of quadratic equation
+		ax^2+bx+c=0
+
+Enter a: 0
+Enter b: -1
+Enter c: 2
+In a quadratic equation, a can not be zero.
+
+Set 2:
+Finding the roots and the nature of them of quadratic equation
+		ax^2+bx+c=0
+
+Enter a: -1
+Enter b: 4
+Enter c: -5
+The roots of this equation are imaginary.
+
+Set 3:
+Finding the roots and the nature of them of quadratic equation
+		ax^2+bx+c=0
+
+Enter a: 2.5
+Enter b: -5
+Enter c: 2.5
+The roots of this equation are real and equal.
+The roots are: 1.000000 and 1.000000
+
+Set 4:
+Finding the roots and the nature of them of quadratic equation
+		ax^2+bx+c=0
+
+Enter a: -1.23
+Enter b: 45.6
+Enter c: 789
+The roots of this equation are real and distinct.
+The roots are: -12.849214 and 49.922382
+
+*/
+