使用 C 語言中的公式計算利息金額


問題

編寫一個 C 程式,以計算若干年後本金增加利息後的金額

解決方案

計算利息的公式為:

M=((r/100) * t);
A=P*exp(M);

其中 r = 利率

            t = 年數

            P = 要存放的金額

            M = 臨時變數

            A = 有利息後的最終金額

演算法

START
Step 1: declare double variables
Step 2: read amount to be deposited
Step 3: read rate of interest
Step 4: read years you want to deposit
Step 5: Calculate final amount with interest
         I. M=((r/100) * t);
         II. A=P*exp(M);
Step 6: Print final amount
STOP

示例

#include<stdio.h>
#include<math.h>
#include<ctype.h>
int main(){
   double P,r,t,A,M;
   printf("amount to be deposit in the bank: ");
   scanf("%lf",&P);
   printf("
enter the rate of interest:");    scanf("%lf",&r);    printf("
How many years you want to deposit:");    scanf("%lf",&t);    M=((r/100) * t);    A=P*exp(M);    printf("
amount after %0.1lf years with interest is:%0.2lf",t,A);    return 0; }

輸出

amount to be deposit in the bank: 50000
enter the rate of interest:6.5
How many years you want to deposit:5
amount after 5.0 years with interest is:69201.53

更新日期:2021 年 3 月 6 日

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