Example: Compound Interest Program in C using While loop

C
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// Compound Interest Program in C using While loop
#include <stdio.h>

int main() {
    float p, t, r, CI = 0.00;
    // p - To store the principle amount
    // t - To store the time amount
    // r - To store the rate amount
    // CI - To store the compound interest value

    printf("Enter the principal (Amount), Time, and Rate::\n");
    scanf("%f%f%f", &p, &t, &r);

    // Calculate compound interest
    double TimePow = 1.00;

    int i = 0;
    while (i < t) {
        TimePow *= (1 + r / 100);

        if (i == (t - 1))
            CI = p * TimePow;

        i++;
    }

    // It will return the final Output
    printf("\nCompound Interest = %f\n", CI);
    return 0;
}