How to express the natural logarithm e in C language

The natural logarithm e in C language can be represented by the M_E constant, whose value is 2.7182818284590452354. To use the e constant, include it in an expression such as e raised to the power 10: #include ; double result = pow(M_E, 10);.

Representation of natural logarithm e in C language

In C language, natural logarithm e can be expressed by M_E Constant representation:

<code class="c">#include <math.h>

double e = M_E;</code>

M_E The e value contained in the constant is:

<code>e = 2.7182818284590452354</code>

Usage example

To use the e constant, you can include it in an expression like other constants:

<code class="c">#include <math.h>

int main() {
  // 计算 e 的 10 次方
  double result = pow(M_E, 10);

  printf("e 的 10 次方为：%.10f\n", result);

  return 0;
}</code>

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