Question

Write a C program to record the GPAs of a class and find the percentage of students in each GPA he program first allows the user to enter the number of students enrolled in the class, and then to enter the GPA of all students one by one. For each student, the input must be between 1 and 4 inclusively. Otherwise, the software displays a message as "Invalid number!" and asks for a new GPA for the same student. A sample interaction is shown below: Sample input: Sample Output: Enter the number of students: 8The total number of students is 8. GPA of student #1 is: 1 GPA of student #2 is : Invalid number! GPA of student #2 is :2 GPA of student #3 is : 3 GPA of student #4 is : 4 GPA of student #5 is : 4 GPA of student #6 is : 2 GPA of student #7 is : 3 GPA of student #8 is :4 GPA 1 -1 student(s) GPA 22 student(s) GPA 3 --2 student(s) GPA 4 -- 3 student(s) The percentage of students with GPA (1) is (12%) The percentage of students with GPA (2) is (25%) The percentage of students with GPA (3) is (25%) The percentage of students with GPA (4) is (38%). Note: you should trace the GPA list just once. So, you should use an array int GPAFreq[ 4] to store the frequencies of each GPA from 1 to 4.

There was another answer for this question but it was not done correctly. Here is the link to it:

https://www.chegg.com/homework-help/questions-and-answers/objective-working-arrays-write-c-program-record-gpas-class-find-number-students-eaclh-gpa--q29791390

That code only was able to calculate the GPA of exactly 8 students. The question is asking to calculate for n number of students.

Answer 1

C Program:

#include <stdio.h>

int main() {

int n,gpa;

printf("Enter the number of students: ");

scanf("%d",&n);

int GPAFreq[4]={0,0,0,0};

for(int i=0;i<8;i++){

printf("GPA of student #%d: ",(i+1));

scanf("%d",&gpa);

while(gpa<0 || gpa>4)

{

printf("\nInvalid input\n");

printf("GPA of student #%d",(i+1));

scanf(" %d",&gpa);

}

if(gpa==1)

GPAFreq[0]++;

else if(gpa==2)

GPAFreq[1]++;

else if(gpa==3)

GPAFreq[2]++;

else

GPAFreq[3]++;

}

printf("The total number of students is %d",n);

for(int i=0;i<4;i++){

printf("\nGPA %d --- %d Students",(i+1),GPAFreq[i]);

}

}