cout.precision
时间: 2023-10-31 20:20:27 浏览: 46
cout()是C++的输出流cout的一个格式控制函数,用于设置浮点数的精度值。通过调用cout.precision(val),可以将浮点数的小数点后保留val位。例如,cout.precision(3)表示将浮点数的小数点后保留3位。<span class="em">1</span><span class="em">2</span><span class="em">3</span>
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