Here we have provided two programs that calculate the simple interest when the user provides the principal, rate, and time. so let’s write a Program to Calculate Simple Interest.

To calculate the simple interest, we have used this formula:

## Program to Calculate Simple Interest

**SI = (p*r*t) / 100**

**SI = Simple interest**

**p = principal**

**r = rate**

**t = time in years**

**C++**

#include<iostream.h> #include< conio.h> void main() { clrscr(); float SI, p,r,t; cout<<"Enter Principal: "; cin>>p; cout<<"Enter rate: "; cin>>r; cout<<"Enter Time: "; cin>>t; SI = (p*r*t)/100; cout<<"The SI is:"<<SI; getch(); }

**Output:**

Enter Principal: 30000 Enter rate: 2 Enter Time: 4 The SI is: 2400.0

**Python **

p= float(input("Enter Principal: ")) r= float(input("Enter rate: ")) t= float(input("Enter Time: ")) SI = (p*r*t)/100 print("The SI is:",SI)

**Output**

Enter Principal: 30000 Enter rate: 2 Enter Time: 4 The SI is: 2400.0

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