`P026.c`¶

Problem Statement

WAP to input sum (p), rate of interest (r), time (t) and type of interest ('s' for simple interest amd 'c' for compound interest). Calculate and display the interest earned si = (p * r * t) / 100 compoundInterest = p * ((1 + r / 100)^t - 1)

Metadata¶

Property	Detail
Author	Amit Dutta (amitdutta4255@gmail.com)
License	MIT
Difficulty	Beginner (index: 1 / 10)

Concepts¶

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Recursion
Pointers

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Source Code¶

#include <stdio.h>
#include <math.h>
#include <ctype.h>
int main()
{
    double principalAmount, rateOfInterest, timePeriod, simpleInterest, compoundInterest;
    char mode;
    printf("Enter the principle amount, Rate of interest, Time : ");
    scanf("%lf %lf %lf", &principalAmount, &rateOfInterest, &timePeriod);
    printf("\nEnter the mode ('s' : simple interest, 'c' : compound interest) : ");
    scanf(" %c", &mode);
    mode = tolower(mode);
    switch (mode)
    {
    case 's':
        simpleInterest = (principalAmount * rateOfInterest * timePeriod) / 100;
        printf("\nSimple Interest : %g", simpleInterest);
        break;
    case 'c':
        compoundInterest = principalAmount * (pow((1 + rateOfInterest / 100), timePeriod) - 1);
        printf("\nCompound Interest : %g", compoundInterest);
        break;
    default:
        printf("\nInvalid Input");
        return 1;
    }
    return 0;
}

Explanation¶

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    - Only use the given code. Do NOT assume anything not present.

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    - Keep explanation clear and short.

    - If something is unclear, say "Not clear from code".

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    FORMAT:

    [START]

    ## What it does

    (Explain the overall purpose in 1-2 sentences)

    ## Step-by-step

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    ## Key Concepts

    (List concepts like loop, condition, function, etc.)

    ## Notes

    (Mention any limitations, errors, or assumptions)

    [END]

    CODE (P026.c):

    #include <stdio.h>
    #include <math.h>
    #include <ctype.h>
    int main()
    {
        double principalAmount, rateOfInterest, timePeriod, simpleInterest, compoundInterest;
        char mode;
        printf("Enter the principle amount, Rate of interest, Time : ");
        scanf("%lf %lf %lf", &principalAmount, &rateOfInterest, &timePeriod);
        printf("\nEnter the mode ('s' : simple interest, 'c' : compound interest) : ");
        scanf(" %c", &mode);
        mode = tolower(mode);
        switch (mode)
        {
        case 's':
            simpleInterest = (principalAmount * rateOfInterest * timePeriod) / 100;
            printf("\nSimple Interest : %g", simpleInterest);
            break;
        case 'c':
            compoundInterest = principalAmount * (pow((1 + rateOfInterest / 100), timePeriod) - 1);
            printf("\nCompound Interest : %g", compoundInterest);
            break;
        default:
            printf("\nInvalid Input");
            return 1;
        }
        return 0;
    }

P026.c¶