rtp編程

1. 怎樣使用linphoneapi編程

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本文鏈接：https://blog.csdn.net/qq_33487044/article/details/104080018

2. C++ C語言程序設計 題目：貸款計算器

/*
* main.c
*
* Created on: 2011-6-8
* Author: icelights
*/

#include <stdio.h>
#include <stdlib.h>
#include <ctype.h>
#include <math.h>

#define APR1 0.0747 /*<1年（含1年）年利率*/
#define APR2 0.0756 /*1-3年（含3年）年利率*/
#define APR3 0.0774 /*3-5年（含5年）年利率*/
#define APR4 0.0783 /*5年以上年利率*/
#define A_TO_M 1/12 /*月利率 = 年利率 / 12*/
#define RTP 12 /*Reimbursement total periods還款總期數 =年限*12*/
#define LENGTH 80

struct LoanInfo
{
/*姓名*/
char name[LENGTH];
/*貸款總額*/
double LoanAmount;
/*貸款年限*/
double LoanYear;
/*月付*/
double MonthlyPayment;
/*總利息*/
double TotalInterest;
/*還款總額*/
double ReimbursementAmount;
/*年利率*/
double apr;

struct LoanInfo * next;
};

void CalcShow(struct LoanInfo * cur, struct LoanInfo * hd,
struct LoanInfo * prv);

int main(void)
{
int temp;
struct LoanInfo * head = NULL;
struct LoanInfo * prev, * current;

current = (struct LoanInfo *)malloc(sizeof(struct LoanInfo));

if (NULL == head)
{
head = current;
}
else
{
prev->next = current;
}/*End of if (NULL == head)*/

puts("請輸入姓名");
gets(current->name);
fflush(stdin);

puts("請輸入貸款數額（單位：萬元）");
scanf("%lf", ¤t->LoanAmount);
fflush(stdin);

puts("請輸入貸款年限");
scanf("%lf", ¤t->LoanYear);
fflush(stdin);

printf("姓名：%s,貸款年限：%lf, 貸款數額%lf",
current->name, current->LoanYear, current->LoanAmount);

prev = current;

puts("請確認Y/N");

temp = getchar();

switch(toupper(temp))
{
case 'Y' : CalcShow(current, head, prev);
break;
case 'N' : free(current);
main();
break;
default : puts("輸入錯誤");
free(current);
break;
}

return 0;
}

void CalcShow(struct LoanInfo * cur, struct LoanInfo * hd,
struct LoanInfo * prv)
{
char lcv_temp;

if (cur->LoanYear <= 1)
cur->apr = APR1;
else if (cur->LoanYear <= 3)
cur->apr = APR2;
else if (cur->LoanYear <= 5)
cur->apr = APR3;
else
cur->apr = APR4;
/*End of if (year <= 1)*/

cur->LoanAmount = 10000 * cur->LoanAmount;
cur->ReimbursementAmount = cur->LoanAmount * pow((1 + cur->apr), cur->LoanYear);
cur->MonthlyPayment = cur->ReimbursementAmount / (cur->LoanYear * RTP);
cur->TotalInterest = cur->ReimbursementAmount - cur->LoanAmount;

printf("姓名：%s 貸款年限：%.0lf\n"
"貸款數額：%.2lf 每月還款額：%.2lf\n"
"利息合計：%.2lf 還款總額：%.2lf\n",
cur->name, cur->LoanYear, cur->LoanAmount,
cur->MonthlyPayment, cur->TotalInterest, cur->ReimbursementAmount);

puts("是否繼續計算Y/N");

lcv_temp = getchar();
switch(toupper(lcv_temp))
{
case 'Y' : free(cur);
main();
break;
case 'N' : free(cur);
exit(0);
default : puts("輸入錯誤");
free(cur);
main();
break;
}

system("pause");

}