How to retain two decimal places in c++

The way to preserve two decimal places in C is to specify fixed-point notation using the stream operator fixed. Use setprecision(2) to specify 2 decimal places.

Retaining two decimal places in C

The way to retain two decimal places in C is to use stream operations Symbols fixed and setprecision. fixed specifies the use of fixed point notation, setprecision specifies the number of digits after the decimal point.

To preserve two decimal places, use the following code:

<code class="cpp">cout << fixed << setprecision(2) << myNumber;</code>

where myNumber is the floating point number you want to preserve decimal places.

Example:

<code class="cpp">#include <iostream>

using namespace std;

int main() {
  double myNumber = 123.4567;

  cout << "原来的数字：" << myNumber << endl;
  cout << "保留两位小数：" << fixed << setprecision(2) << myNumber << endl;

  return 0;
}</code>

Output:

<code>原来的数字：123.4567
保留两位小数：123.46</code>

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