C Program to Calculate Simple Interest

  • Write a C program to read principal amount, rate of interest and time and calculate simple interest.
  • Wap in C to find simple interest.

Required Knowledge


We will first read Principle amount, rate of interest and time using scanf function. We will use below mentioned formulae to calculate Simple Interest (SI).

  • Simple Interest = (Principle x Rate x Time) / 100

C program to calculate simple interest

/* 
 * C program to calculate simple interest 
 */  
  
#include <stdio.h>  
  
int main() {  
    float principle, rate, time, simpleInterest;    
  
    /* 
     * Take Principle, Rate of interest and 
     * Time as input from user.
     */  
    printf("Enter Principle Amount\n");  
    scanf("%f", &principle);  
    printf("Enter Rate of Interest\n");  
    scanf("%f", &rate);  
    printf("Enter Time of Loan\n");  
    scanf("%f", &time);  
  
    /*
     * Simple Interest = (Principle X Rate X Time)/100;
     */  
    simpleInterest = (principle * rate * time)/100;  
  
    printf("Simple Interest = %.2f", simpleInterest);  
  
    return 0;  
}

Output
Enter Principle Amount
10000
Enter Rate of Interest
5
Enter Time of Loan
2
Simple Interest = 1000.00

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