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Dev C++Selection within a loop/break/continue Using do-while structure, write a program that continuously requests the user to enter a mark. If the mark is less than 0 or greater than 100, the program will print a message stating the mark entered is invalid: otherwise, the mark will be added to the total. When a mark of 999 (sentinel) is entered, the program should end the loop and display the average of the valid marks entered in two decimal points. Enter a mark (enter 999 to exit): 100 Enter a mark (enter 999 to exit): 101 An invalid mark has been entered! Please reenter a valid mark. Enter a mark (enter 999 to exit): -2 An invalid mark has been entered! Please reenter a valid mark. Enter a mark (enter 999 to exit): 50 Enter a mark (enter 999 to exit): 999 you have choose to end the program The average of the valid marks entered is: 75.00
Expert Answer
Answer :-
This is the code for your question
#include<iostream>
#include<iomanip>
using namespace std;
int main(){
int m,c=0;
float total;
do{
cout<<“Enter marks(999 to exit:”;
cin>>m;
cout<<endl;
if(m==999){
cout<<“You have chosed to end the program.”<<endl;
break;
}
else if(m>=0&&m<=100){
total+=m;
c++;
}
else
cout<<“An invalid mark has been entered: Please reenter valid marks.”<<endl;
}while(m!=999);
total/=c;
cout<<“The average of the valid marks:”<<fixed<<setprecision(2)<<total;
return 0;
}
