#include <stdio.h>

char GradeFromPercentage(float Ngrade, int assnum, int i);

int main(int argc, const char * argv[]) {
    // insert code here...
    //char Lgrade;
    printf("\n\n");
    printf("Welcome to the online grade centre program!\n");
    printf("\n\n");
    GradeFromPercentage(Ngrade, assnum, i);
    // GradeFromPercentage();
    return 0;
}

char GradeFromPercentage(float Ngrade, int assnum, int i) {

    printf("How many assignments are you entering a percentage for: ");
    scanf("%d", &assnum);

    for (i=0; i < assnum; i++)
    {
        printf("Enter your grade percentage: ");
        scanf("%f", &Ngrade);

        if (Ngrade>= 90) {
            printf("You grade is: A");
        } else if (Ngrade>= 70) {
            printf("You grade is: B");
        } else if (Ngrade>= 50) {
            printf("You grade is: C");
        }else if (Ngrade>= 30) {
            printf("You grade is: D");
        }else if (Ngrade< 30) {
            printf("You grade is: F");
        }else{
            printf("Invalid score, restart program.");
        }
    }

    return Ngrade;
}