January 31, 2023, Learn eTutorial

1302

This is a program in C++ to calculate and print the simple interest based on the data entered by the user at run-time.

Simple interest is the interest that we have to pay for a principal amount for a time period with a certain rate of interest. Simple interest is a straightforward technique for calculating interest in money.

Simple Interest is calculated using the following formula: SI = P × R × T, where P = Principal, R = Rate of Interest, and T = Time period. Here, the rate given in percentage (r%) is written as r/100. And the principal is the sum of money that remains constant every year in the case of simple interest.

The formula to find simple interest is:

**SI = (P*R*T)/100**

Here the value of** P, R,** and **T **have to be entered by the user at run-time.

Ask the user to enter the principal amount and read the value into the variable** p**; Ask the user to enter the rate of interest and get the value to the variable** r** and ask the user to enter the time period and get the value to the variable** t; **calculate the simple interest by using the formula **si = (p*r*t)/100;**

Display the value on the variable** si.**

**Step 1**: Call the header file` iostream.`

**Step 2**: Use the `namespace std.`

**Step 3: **Open the main function; **int main()**.

**Step 4:** Declare float type variables **p, r, t, si;**

**Step 5**: Ask the user to enter the principal amount

**Step 6**: Get the value to the variable **p**;

**Step 7**: Ask the user to enter the rate of interest;

**Step 8:** Get the value to the variable** r**;

**Step 9**: Ask the user to enter the time period;

**Step 10**: Get the value to the variable** t;**

**Step 11**: Calculate the simple interest by using the formula **si = (p*r*t)/100;**

**Step 12**: Display the result

**Step 13:** exit

` ````
#include<iostream>
using namespace std;
int main()
{
float p, r, t, si;
cout<<"Enter Principle Amount: ";
cin>>p;
cout<<"Enter Rate of Interest: ";
cin>>r;
cout<<"Enter Time Period: ";
cin>>t;
si = (p*r*t)/100;
cout<<"\nSimple Interest Amount: "<<si;
cout<<endl;
return 0;
}
```

Enter Principle Amount: 256000 Enter Rate of Interest: 8 Enter Time Period: 5 Simple Interest Amount: 102400