Code:#include <stdio.h> #include <stdlib.h> int main{ int q1, q2, q3, qav, mid, fe, fg; printf("\nEnter Quiz 1:"); scanf("%d", &q1); printf("\nEnter Quiz 2:"); scanf("%d", &q2); printf("\nEnter Quiz 3:"); scanf("%d", &q3); qav = ((q1+q2+q3)/3)*10; printf("\nEnter Midterm Score:"); scanf("%d",&mid); printf("\nEnter Final Exam Score:"); scanf("%d",&fe); fg = 0.5*fe + 0.25*mid +0.25*qav; scanf("%d",&fg); if ((fg>=90) && (fg<=100)) printf("A\n"); else if ((fg>=80) && (fg<90)) printf("B\n"); else if ((fg>=70) && (fg<80)) printf("C\n"); else if ((fg>=60) && (fg<70)) printf("D\n"); else printf("\nF"); }