#include <stdio.h>
#include <math.h>
 
int main() {
    // 初期設定
    double principal = 1000000; // 元金 100万円
    double rate1 = 0.02;        // 年利2%
    double rate2 = 0.03;        // 年利3%
    int years = 10;             // 運用期間（年利2%）
    double target = 1500000;    // 目標金額 150万円
 
    // 年利2%での計算
    double totalAmount = principal * pow(1 + rate1, years);
    printf("年利2%%で10年間複利運用した場合の元利合計: %.2f円\n", totalAmount);
 
    // 年利3%で目標金額を超えるまでの年数を計算
    int yearCount = 0;
    double amount = principal;
    while (amount <= target) {
        amount *= (1 + rate2);
        yearCount++;
    }
    printf("年利3%%で元利合計が150万円を超えるまでの年数: %d年\n", yearCount);
 
    return 0;
}
 

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