Write a function qualityPoints that inputs a student's average and returns 4 if a student's average is 90-100, 3 if the average is 80-89, 2 if the average is 70-79, 1 if the average is 60-69, and 0 if the average is lower than 60.

What do I have wrong?Code:#include <stdio.h> int qualityPoints(int a, int b, int c, int d, int f); int main() { int x; int q; int a; int b; int c; int d; int f; printf("Enter student's average grade:", x); scanf("%d", &x); q = qualityPoints(a, b, c, d, f); printf("Student's average is between %d", q ); return 0; } int qualityPoints(int a,int b, int c, int d, int f) { for(a = 100; a >= 90; a--){ if(a >= 90) return 4; } for(b = 89; b >= 80; b--){ if(b >= 80) return 3; } for(c = 79; c >= 70; c--){ if(c >= 70) return 2; } for(d = 69; d >= 60; d--){ if(d >= 60) return 1; } for(f = 59; f >= 0; f--){ if(f < 60) return 0; } }