What is x! equal to in c language?

In C language, x! represents the factorial of x, which is the product of a positive integer from 1 to itself. Use the exclamation mark (!) operator for calculations, which only works with positive integers.

x! What is equal to in C language?

x! represents the factorial of x in C language. Factorial is a mathematical operation that represents the product of a positive integer from 1 to itself.

For example:

• 5! = 5 × 4 × 3 × 2 × 1 = 120
• 10! = 10 × 9 × 8 × 7 × 6 × 5 × 4 × 3 × 2 × 1 = 3,628,800

In C language, use the exclamation point (!) operator to calculate the factorial. This operator can only be applied to positive integers.

Usage example:

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

int main() {
  int x = 5;
  int result = x!;  // 计算 x! 的阶乘
  printf("5! = %d\n", result);  // 输出结果

  return 0;
}</code>

Output:

<code>5! = 120</code>

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