存款利率计算器v3.0

怼烎@ 2022-11-12 10:57 447阅读 0赞

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  1. #include<stdio.h>
  2. #include<math.h>
  3. int main()
  4. {
  5.     double rate, capital, deposit;
  6.     short year;
  7.     char flag=1;
  8.     char c;
  9.     printf("Input capital, year:");
  10.     scanf("%lf,%d", &capital, &year);
  11.     //
  12.     switch(year)
  13.     {
  14.         case 1: rate=0.0225; break;
  15.         case 2: rate=0.0243; break;
  16.         case 3: rate=0.027;  break;
  17.         case 5: rate=0.0288; break;
  18.         case 8: rate=0.03;   break;
  19.         default: flag=0;
  20.     }
  21.     //
  22.     printf("Compound interest (Y/N)?");
  23.     scanf(" %c", &c);
  24.     if(flag!=0)//输入的年份无误
  25.     {
  26.         if(c=='y'||c=='Y')
  27.         {
  28.             deposit=capital*pow((1+rate), year);
  29.         }
  30.         else if(c=='n'||c=='N')
  31.         {
  32.             deposit=capital*(1+rate*year);
  33.         }
  34.         printf("rate = %.4f, deposit = %.4f\n", rate, deposit);
  35.     }
  36.     else
  37.     {
  38.         printf( "Error year!\n");
  39.     }
  40.     //
  41.     return 0;
  42. }

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