#include <stdio.h>
#include <math.h>   // for pow()
 
// Function to calculate EMI
float calculateEMI(float principal, float rate, int tenureYears) {
    int n = tenureYears * 12;                // months
    float monthlyRate = rate / (12 * 100);   // monthly rate
    float emi;
 
    emi = (principal * monthlyRate * pow(1 + monthlyRate, n)) /
          (pow(1 + monthlyRate, n) - 1);
 
    return emi;
}
 
int main() {
    float principal, rate;
    int tenure, i, j, nRates, nTenures;
 
    // Input principal amount
    printf("Enter loan amount (Principal): ");
    scanf("%f", &principal);
 
    // Input number of interest rates to test
    printf("Enter number of interest rates to compare: ");
    scanf("%d", &nRates);
 
    float rates[nRates];
    for (i = 0; i < nRates; i++) {
        printf("Enter annual interest rate %d (in %%): ", i + 1);
        scanf("%f", &rates[i]);
    }
 
    // Input number of tenures to test
    printf("Enter number of tenures to compare: ");
    scanf("%d", &nTenures);
 
    int tenures[nTenures];
    for (j = 0; j < nTenures; j++) {
        printf("Enter tenure %d (in years): ", j + 1);
        scanf("%d", &tenures[j]);
    }
 
    // Display EMI comparison table
    printf("\n=====================================================\n");
    printf("   Rate  |  Tenure (Years)  |   EMI (per month)\n");
    printf("=====================================================\n");
 
    for (i = 0; i < nRates; i++) {
        for (j = 0; j < nTenures; j++) {
            float emi = calculateEMI(principal, rates[i], tenures[j]);
            printf(" %6.2f%% | %10d       | %12.2f\n", rates[i], tenures[j], emi);
        }
    }
 
    printf("=====================================================\n");
 
    return 0;
}