Something weird is happening when I try to format this output, it seems like the floats aren't right justified?
当我尝试格式化这个输出时，发生了一些奇怪的事情，看起来浮动效果不正确吗？
I want the decimal points to line up... Am I doing something wrong?
我想要小数点排队......我做错了什么？
if (flushParams -> Volume > 0)
{
printf("\n %-23s %7ld %2s %7ld %3s %2s %4.1f %1s %9s %4.1f %2s %9s %4.1f %2s",
"Intake Flush",
event_data -> water1.ml, "ml",
event_data -> water1.secs, "sec",
"LB", event_data -> water1.bat, "V",
"Average I", event_data -> water1.average_current, "mA",
"Highest I", event_data -> water1.highest_current, "mA");
Message(event_data -> water1.message);
printf("\n %-11s = %02d", "Flush port", event_data -> portwater);
}
printf("\n\n %-23s %7ld %2s %7ld %3s %2s %4.1f %1s %9s %4.1f %2s %9s %4.1f %2s",
"Sample",
event_data -> sample.ml, "ml",
event_data -> sample.secs, "sec",
"LB", event_data -> sample.bat, "V",
"Average I", event_data -> sample.average_current, "mA",
"Highest I", event_data -> sample.highest_current, "mA");
Message(event_data -> sample.message);
printf("\n %-11s = %02d", "Sample port", event_data -> portsample);
printf("\n ");
print_datetime(event_data -> time_off);
printf(" %3.1f Vbat %3.1f %cC PORT = %02d",
event_data -> vbat_off, event_data -> celcius_off, 248, event_data -> portend);
printf("\n");
The output looks like this:
输出如下：
Intake Flush 101 ml 34 sec LB 22.5 V Average I 113.0 mA Highest I 118.0 mA Volume reached
Flush port = 00
Sample 320 ml 141 sec LB 22.5 V Average I 91.0 mA Highest I 97.0 mA Volume reached
Sample port = 01
12/09/15 17:11:14 22.6 Vbat 22.5 øC PORT = 01
Notice how the "Average I" and "Highest I" values aren't lining up? Shouldn't they be right justified by default? I expect the last displayed digit of the float would be to the right most position in the the 4 character space I have designated for the float. The longs are displaying the way I expected.
注意“平均I”和“最高I”值是如何排队的？它们不应该默认是正确的吗？我希望浮动的最后一个显示数字位于我为浮点数指定的4个字符空间中的最右边位置。多头展示了我的预期。
1 个解决方案
#1
2
For your data, changing %4.1f to %5.1f will solve this problem. In a %m.nf format specifier, the m is the total width of the field in bytes, not the number of digits preceding the decimal point.
对于您的数据，将％4.1f更改为％5.1f将解决此问题。在％m.nf格式说明符中，m是字节的总宽度（以字节为单位），而不是小数点之前的位数。
#1
2
For your data, changing %4.1f to %5.1f will solve this problem. In a %m.nf format specifier, the m is the total width of the field in bytes, not the number of digits preceding the decimal point.
对于您的数据，将％4.1f更改为％5.1f将解决此问题。在％m.nf格式说明符中，m是字节的总宽度（以字节为单位），而不是小数点之前的位数。