Answer to Question #44644 in C++ for shivam chawla

Question #44644
Write a menu driven program in C++ to calculate the simple interest or compound interest depending upon the user’s choice. Write and use functions to calculate simple interest and compound interest.
#include <iostream>
using namespace std;
int main()
{
//global variables
int ch=-1;
double P;
double j;
int m;
int t;
double S;
double SI;
do{
while(ch<1 || ch>3){
cout<<"1 - Simple interest\n";
cout<<"2 - Compound interest\n";
cout<<"3 - Exit\n";
cin>>ch;
switch(ch){
case 1:
//Principal or Sum [P] =
cout<<"Enter principal amount: ";
cin>>P;
//Rate % per Annum [j] = %
cout<<"Enter interest rate: ";
cin>>j;
//Time [T] =
cout<<"Enter time: ";
cin>>t;
//Simple Interest [S.I.]
SI=(P*j*t)/100;
//show result
cout<<"Simple Interest: "<<SI<<"\n\n";
break;
case 2:
//P = principal amount (initial investment)
cout<<"Enter principal amount: ";
cin>>P;
//j = annual nominal interest rate (not reflecting the compounding)
cout<<"Enter an annual nominal interest rate: ";
cin>>j;
//m = number of times the interest is compounded per year
cout<<"Enter the number of times the interest is compounded per year: ";
cin>>m;
//t = number of years the money is borrowed for
cout<<"Enter the number of years the money is borrowed for: ";
cin>>t;
//S = value after t periods
S=P*pow((1+j/m),m*t);
//show result
cout<<"Future Value: \$"<<S<<"\n\n";
break;
case 3:
break;
}
}
}while(ch!=3);
return 0;
}

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