A question very much like the one posted by another user that had not been answered yet:
https://www.chegg.com/homework-help/questions-and-answers/question-1-calculator-6-pts-question-write-simple-calculator-3141592-write-program-prompts-q41214637
//For any queries, feel free to comment.
**CODE**
import java.util.*;
public class Main
{
public static void main(String[] args) {
Scanner in = new
Scanner(System.in);
//Loop ot continue until
//user wants
while(true){
System.out.print("Enter expression('exit' to end): ");
String str
= in.nextLine();
int index
= -1;
//Check
input with exit
if(str.equals("exit")){
System.out.println("Program Ended.");
break;
}
//Finding
the operator
for(int
i=0;i<str.length();i++){
if(str.charAt(i)=='+' || str.charAt(i)=='*' || str.charAt(i)=='-'
|| str.charAt(i)=='/' || str.charAt(i)=='%'){
index = i;
break;
}
}
//Extrcting the operator and operand
String op1
= str.substring(0,index);
String ope
= str.substring(index,index+1);
String op2
= str.substring(index+1,str.length());
//Parsing
String into integer
int num1 =
Integer.parseInt(op1);
int num2 =
Integer.parseInt(op2);
//Calculating answer according to operator
if(ope.equals("+")){
int ans = num1 +
num2;
System.out.println("Output: " + ans);
}
else
if(ope.equals("-")){
int ans = num1 -
num2;
System.out.println("Output: " + ans);
}
else
if(ope.equals("*")){
int ans = num1 *
num2;
System.out.println("Output: " + ans);
}
else
if(ope.equals("/")){
int ans = num1 /
num2;
System.out.println("Output: " + ans);
}
else
if(ope.equals("%")){
int ans = num1 %
num2;
System.out.println("Output: " + ans);
}
}
}
}
**SNIPPET**


**OUTPUT**

A question very much like the one posted by another user that had not been answered...
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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.
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