In this post, we will be learning how to write a C++ Program to Calculate Simple Interest of the given values of Principle, Time and Rate.

### The formula to Calculate Simple Interest

To calculate S.I, we have a formula:

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S.I = (P*R*T)/100 Where, S.I represents Simple Interest, P represents Principle, R represents Rate (annually), T represents Time (in years). |

Code:

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#include <iostream> using namespace std; int main() { float p; float r; float t; // Taking an input for principle cout << "Enter the principle: "; cin >> p; // Taking an input for rate per year cout << "Enter the rate: "; cin >> r; // Taking an input for time cout << "Enter the time(In Year): "; cin >> t; // formula for S.I. is (p*r*t)/100 float si = (p*r*t)/100; // printing the simple interest cout << "The Simple Interest is " << si << endl; return 0; } |

Output:

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Enter the principle: 500 Enter the rate: 5 Enter the time(In Year): 3 The Simple Interest is 75 |