请问这样写for错在哪里？ - 编程论坛

#2

rjsp2019-09-25 16:05

程序代码：

#include <stdio.h>

int main( void )
{
    double money;
    printf( "enter the amount of money: " );
    if( scanf("%lf",&money)!=1 || money<0 )
        return 1;

    //  from 5% to 12% in steps of 0.5%
    printf( "RATE\tINTEREST\n");
    for( unsigned rate=50; rate<=120; rate+=5 )
    {
        double interest = money * rate/1000.;
        printf( "%4.1f%%\t%6.2f\n", rate/10., interest );
    }
}

输入

1000

输出

RATE    INTEREST
5.0%    50.00
5.5%    55.00
6.0%    60.00
6.5%    65.00
7.0%    70.00
7.5%    75.00
8.0%    80.00
8.5%    85.00
9.0%    90.00
9.5%    95.00
10.0%   100.00
10.5%   105.00
11.0%   110.00
11.5%   115.00
12.0%   120.00

#3

wlcsss1232019-09-25 17:07

marn ??

#4

清风幽然2019-09-25 17:54

回复 2楼 rjsp

Thank you !

But how can I add the year++ in the for loop to calculate year ?

#5

niuniuchiniu2019-09-25 23:21

printf ("enter the amount of money : "); 完完全全的中式英文.

#6

bcbbcclbbc2019-09-26 01:55

很明显的for语句括号里可以有三个语句（语句1；语句2；语句3）并用分号隔开，而楼主多写了一个分号

for (r=0.05; r<=0.12; r+=0.005;y++)

可以将最后一个分号改成逗号，形成一个逗号表达式
for（r=0.05;r<=0.12;r+=0.005,y++）

#7

清风幽然2019-09-26 14:34

回复 6楼 bcbbcclbbc

Thank you !