Solution of Quadratic Equations Using C
This problem makes you clear about writing Math functions in C. Here I use sqrt() funcitons to calculate the square root. This is the simple program and calculates only real roots. The complete source code and output is given below:
1: #include<stdio.h>
2: #include<math.h> //must be included
3:
4: int main(){
5: float a,b,c,dscr,root1,root2;
6: printf("Enter the value of a, b and c: ");
7: scanf("%f%f%f",&a,&b,&c);
8: dscr = pow(b,2) - 4*a*c;
9: if(dscr < 0){
10: printf("\nRoots are imaginary\n");
11: }else{
12: root1 = (-b + sqrt(dscr))/(2.0*a);
13: root2 = (-b - sqrt(dscr))/(2.0*a);
14: printf("\nRoot1 = %f\nRoot2 = %f",root1,root2);
15: }
16:
17: return 0;
18: }
19:output
