c语言中函数double,C语言中函数的调用

这串JAVA代码，我想求得所有的利息和,要怎么写

先定义个sum：double sum=0；

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然后在for循环中加入这代码 就好了：sum=repayInterest+sum；

java 计算存款利息

money(1+rate)^year - money

是money * (1+rate)^year - money，和普通的数学顺序一样，先计算级别高的，括号内的1+rate、再乘方year、再乘 money，最后减money。

转成java的计算式，也是按顺序的，乘方的地方就是按JAVA的函数pow的要求，写进参数。

money*Math.pow((1+rate),year)-money;

跪求JAVA编写的银行利息计算器代码

这个很简单,只是我对这些计算规则不熟悉

import java.util.ListIterator;

import java.util.Stack;

public class CalStr {

private String src;

/**

* constructor

*

* @param srcthe string(expression) to calculate

*/

public CalStr(String src) {

this.src = src;

}

/**

* calculate to get the result

*

* @return(double)result

*/

public double getResult() {

String postfix = getPostfix();

Stack stk = new Stack();

// System.out.println(postfix);

String parts[] = postfix.split(" +");

double result = 0;

for (int i = 0; i parts.length; i++) {

char tmp = parts[i].charAt(0);

if (!isOperator(tmp)) {

stk.push(parts[i]);

} else {

double a = Double.parseDouble((String) stk.pop());

double b = Double.parseDouble((String) stk.pop());

// b is followed by a in the orignal expression

result = calculate(b, a, tmp);

stk.push(String.valueOf(result));

}

}

return result;

}

/**

* test if the character is an operator,such +,-,*,/

*

* @param opthe character to test

* @returntrue if op is an operator otherwise false

*/

private boolean isOperator(char op) {

return (op == '+' || op == '-' || op == '*' || op == '/');

}

/**

* calculate an expression such (a op b)

*

* @param anumber 1

* @param bnumber 2

* @param opthe operator

* @return(double)(a op b)

*/

public double calculate(double a, double b, char op) {

switch (op) {

case '+':

return a + b;

case '-':

return a - b;

case '*':

return a * b;

case '/':

return a / b;

}

return -1;

}

/**

* convert the suffix to postfix

*

* @returnthe postfix as a string

*/

private String getPostfix() {

Stack stk = new Stack();

String postfix = new String();

char op;

int i = 0;

while (i src.length()) {

if (Character.isDigit(src.charAt(i)) || src.charAt(i) == '.') {

postfix += " ";

do {

postfix += src.charAt(i++);

} while ((i src.length())

(Character.isDigit(src.charAt(i))));

postfix += " ";

}

else {

switch (op = src.charAt(i++)) {

case '(':

stk.push("(");

break;

case ')':

while (stk.peek() != "(") {

String tmp = (String) stk.pop();

postfix += tmp;

if (tmp.length() == 1 isOperator(tmp.charAt(0)))

postfix += " ";

}

stk.pop();

postfix += " ";

break;

case '+':

case '-':

while ((!stk.empty()) (stk.peek() != "(")) {

postfix += stk.pop() + " ";

}

stk.push(String.valueOf(new Character(op)));

break;

case '*':

case '/':

while ((!stk.empty())

((stk.peek() == "*") || (stk.peek() == "/"))) {

postfix += stk.pop() + " ";

}

stk.push(String.valueOf(new Character(op)));

break;

}

}

}

ListIterator it = stk.listIterator(stk.size());

while (it.hasPrevious())

postfix += it.previous() + " ";

return postfix.trim().replaceAll(" +\\.", ".");

}

/**

* main function

*

* @param args

*/

public static void main(String args[]) {

System.out.println(new CalStr("((1.5+6.000)*9+9.36)*(8+9-8*8+8*7)")

.getResult());

}

}

new CalStr( 写上你的计算公式 );

最简单的银行管理系统有利息算法的java简单代码

package com.nsu.java.base;

import java.util.Scanner;

public class homework {

public static void main(String[] args) {

double a=0.0115;

double b;

double d;

double c,f;

System.out.println("请输入您的存款金额：");

Scanner it=new Scanner(System.in);

d=it.nextDouble();

System.out.println("请输入您的存款期限：");

b=it.nextDouble();

c=d-d+d*a;

f=b*c;

System.out.println("您的预期收入为："+f);

}

}

建议把上面的包名改一下。

JAVA计算存款利息

/**

需求：本金1万元人民币，以一年期整存整取的形式储蓄在银行，一年期利率为2.79%，n年后连本带息共计多少钱。

*/

class Calculate

{

public double calcuTotal(double prin,double rate,int n) //参数分别是本金、利率,存放期

{

double inte=0.00; //利息

double sum=prin;

for(int i=0;in;i++)

{

inte=inte+prin*rate; //一年期整存整存的利息算法

}

sum+=inte;

return sum;

}

}

class ParamSet

{

public static void main(String[] args)

{

//设置你要的参数

double prin=10000.00;

double rate=0.0279;

int n=10;

//存多少年

Calculate c = new Calculate();

double sum=c.calcuTotal(prin,rate,n);

System.out.println("本金："+prin+" 元 \n存款利率："+rate+'\n'+n+"年后连本带息共为："+sum+"元");

}

}

用java编写程序:求银行本息的!题目如下:

简单些了个，如果没理解错的话，应该可以满足要求：

public class Benxi{

private double benxi;//本息

private double lilu;//年利率

//计算本息

private double resBenxi(double money,int year){

benxi=money+money*getLilu(year)*year;

return benxi;

}

//选择利率

private double getLilu(int year){

switch(year){

case 1:

lilu=2.25/100;

break;

case 2:

lilu=2.7/100;

break;

case 3:

lilu=3.24/100;

break;

case 5:

lilu=3.6/100;

break;

}

return lilu;

}

public static void main(String[] args){

Benxi bx=new Benxi();

System.out.println("10000元存一年的本息为:"+bx.resBenxi(10000,1));

System.out.println("10000元存两年的本息为:"+bx.resBenxi(10000,2));

System.out.println("10000元存三年的本息为:"+bx.resBenxi(10000,3));

System.out.println("10000元存五年的本息为:"+bx.resBenxi(10000,5));

}

}