#include<stdio.h>

#include<math.h>

void FL()

{

???????? int n,j;

???????? double i,p,f;

???????? printf("請輸入本金");

???????? scanf("%lf",&p);

???????? printf("請輸入年利率");

???????? scanf("%lf",&i);

???????? printf("請輸入存款年限");

???????? scanf("%d",&n);

???????? printf("請輸入復利次數");

???????? scanf("%d",&j);

???????? f=p*pow((1+i/j),n*j);

???????? printf("本金利息共為%lf\n",f);

}

void DL()

{

????????

???????? double f,i,p,n;

???????? printf("請輸入本金");

???????? scanf("%lf",&p);

???????? printf("請輸入年利率");

???????? scanf("%lf",&i);

???????? printf("請輸入存款年限");

???????? scanf("%lf",&n);

???????? f=p*(1+i*n);

???????? printf("本金利息共為%lf\n",f);

}

void BJ()

{

???????? int n1,n2,j1,a;

???????? double f1,f2,i1,i2,p1,p2;

??? printf("1:復利計算本金\n");

??? printf("2:單利計算本金\n");

???????? printf("請輸入序號(1-2)");

CBJ:

???????? scanf("%d",&a);

??? switch(a)

???????? {

???????? case 1:

???????? printf("請輸入目標金額");

???????? scanf("%lf",&f1);

???????? printf("請輸入年利率");

???????? scanf("%lf",&i1);

???????? printf("請輸入存款年限");

???????? scanf("%d",&n1);

???????? printf("請輸入復利次數");

???????? scanf("%d",&j1);

???????? p1=f1/pow(i1/j1+1,j1*n1);

???????? printf("本金為%lf\n",p1);

???????? break;

???????? case 2:

???????? printf("請輸入目標金額");

???????? scanf("%lf",&f2);

???????? printf("請輸入年利率");

???????? scanf("%lf",&i2);

???????? printf("請輸入存款年限");

???????? scanf("%d",&n2);

???????? p2=f2/(1+i2*n2);

???????? printf("本金為%lf\n",p2);

???????? break;

???????? default:

?????????????????? printf("請重新輸入序號(1-2)");

?????????????????? goto CBJ;

???????? }

?

}

void Time()

{

???????? int j1,a;

??? double? f1,f2,i1,i2,p1,p2,n1,n2;

??? printf("1:復利計算時間\n");

??? printf("2:單利計算時間\n");

???????? printf("請輸入序號(1-2)");

CTime:

???????? scanf("%d",&a);

??? switch(a)

???????? {

???????? case 1:

???????? printf("請輸入目標金額");

???????? scanf("%lf",&f1);

???????? printf("請輸入年利率");

???????? scanf("%lf",&i1);

???????? printf("請輸入本金");

???????? scanf("%lf",&p1);

???????? printf("請輸入復利次數");

???????? scanf("%d",&j1);

???????? n1=log(pow(f1/p1,1/j1))/log(1+i1/j1);

???????? printf("時間為%lf\n",n1);

???????? break;

???????? case 2:

???????? printf("請輸入目標金額");

???????? scanf("%lf",&f2);

???????? printf("請輸入年利率");

???????? scanf("%lf",&i2);

???????? printf("請輸入本金");

???????? scanf("%lf",&p2);

??? n2=(f2/p2-1)/i2;

???????? printf("時間為%lf\n",n2);

???????? break;

???????? default:

?????????????????? printf("請重新輸入序號(1-2)");

?????????????????? goto CTime;

?

???????? }

?

}

void LL()

{

???????? int a;

???????? double f1,f2,i1,i2,p1,p2,n1,n2,j1;

??? printf("1:復利計算利率\n");

??? printf("2:單利計算利率\n");

???????? printf("請輸入序號(1-2)");

CLL:

???????? scanf("%d",&a);

??? switch(a)

???????? {

???????? case 1:

???????? printf("請輸入目標金額");

???????? scanf("%lf",&f1);

???????? printf("請輸入存款年限");

???????? scanf("%lf",&n1);

???????? printf("請輸入本金");

???????? scanf("%lf",&p1);

???????? printf("請輸入復利次數");

???????? scanf("%lf",&j1);

???????? i1=j1*(pow(pow(f1/p1,1/j1),1/n1)-1);

???????? printf("利率為%lf\n",i1);

???????? break;

???????? case 2:

???????? printf("請輸入目標金額");

???????? scanf("%lf",&f2);

???????? printf("請輸入本金");

???????? scanf("%lf",&p2);

???????? printf("請輸入存款年限");

???????? scanf("%lf",&n2);

???????? i2=(f2/p2-1)/n2;

???????? printf("利率為%lf\n",i2);

???????? break;

???????? default:

?????????????????? printf("請重新輸入序號(1-2)");

?????????????????? goto CLL;

???????? }

?

}

void DT()

{?

?? int b;

?? double M,a,x,n;

?? printf("1:月定基金投\n");

?? printf("2:年基金定投\n");

?? printf("請輸入序號(1-2)");

CDT:

?? scanf("%d",&b);

?? switch(b)

?? {

?? case 1:

???????? ?? printf("請輸入每期定投金額");

???????? ?? scanf("%lf",&a);

???????? ?? printf("請輸入收益率");

???????? ?? scanf("%lf",&x);

???????? ?? printf("請輸入定投期數");

???????? ?? scanf("%lf",&n);

???????? ?? M=a*12*(1+x)*(-1+pow(1+x,n))/x;

?????? printf("預期收入為%lf\n",M);

???????? ?? break;

?? case 2:

?????? printf("請輸入每期定投金額");

???????? ?? scanf("%lf",&a);

???????? ?? printf("請輸入收益率");

???????? ?? scanf("%lf",&x);

???????? ?? printf("請輸入定投期數");

???????? ?? scanf("%lf",&n);

???????? ?? M=a*(1+x)*(-1+pow(1+x,n))/x;

???????? ?? printf("預期收入為%lf\n",M);

???????? ?? break;

???????? default:

?????????????????? printf("請重新輸入序號(1-2)");

?????????????????? goto CDT;

???????? }

??

}

void HK()

{

? int n,j;

???????? double i,p,f,y;

???????? printf("請輸入貸款金額");

???????? scanf("%lf",&p);

???????? printf("請輸入年利率");

???????? scanf("%lf",&i);

???????? printf("請輸入還款年限");

???????? scanf("%d",&n);

???????? printf("請輸入復利次數");

???????? scanf("%d",&j);

???????? f=p*pow((1+i/j),n*j);

???????? y=f/(n*12);

???????? printf("每月還款為%lf\n",y);

}

?

?

?

void main()

{

???????? int m;

???????? printf("1:復利計算\n");

???????? printf("2:單利計算\n");

???????? printf("3:求本金\n");

???????? printf("4:求時間\n");

???????? printf("5:求利率\n");

???????? printf("6:基金定投\n");

???????? printf("7:每月還款\n");

?

???????? printf("請輸入序號(1-7)");

CX:??

???????? scanf("%d",&m);

???????? if(m==1)

?????????????????? FL();

???????? ?else if(m==2)

???????? ??? DL();

???????? ?else if(m==3)

?????????????????? BJ();

???????? ?else if(m==4)

?????????????????? Time();

???????? ?else if(m==5)

?????????????????? ?LL();

???????? ?else if(m==6)

?????????????????? ?DT();

???????? ?else if(m==7)

?????????????????? ?HK();

???????? ?else

???????? ?{??

?????????????????? ?

?????????????????? printf("請重新輸入序號(1-7)");

???????? ??? goto CX;

???????? ?}

?

}

?

?

轉載于:https://www.cnblogs.com/Rick00/p/5295983.html

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