// // #include int main (void) { float a, b, c, d, grade; printf("Enter thresholds for A, B, C, D\n"); printf("in that order, decreasing percentages > "); scanf("%f%f%f%f", &a, &b, &c, &d); printf("Thank you. Now enter student score (percent) >"); scanf("%f", &grade); if (grade>=a) printf("Student has an A grade\n"); else if (grade>=b) printf("Student has an B grade\n"); else if (grade>=c) printf("Student has an C grade\n"); else if (grade>=d) printf("Student has an D grade\n"); else printf("Student has an F grade\n"); return(0); }