To find the factorial of N and the factorial of the first n number and

To find the factorial of n

#include <stdio.h>

#include <stdlib.h>

int Main ()

{

int n = 0;

int sum = 1;

scanf ( "%d", &n);

while (n)//n, if zero, does not enter the loop body, the sum initial value of the output is 1

{

Sum *=n;

n--;

}

printf ( "%d\n", sum);

System ( "pause");

return 0;

}

for factorial and from 1 to n

#include <stdio.h>

#include <stdlib.h>

int Main ()

{

int n = 0;

int ret = 1;

int sum = 0;

scanf ( "%d", &n);

for (int i = 1; I <=n;i++)

{

RET *= i; RET is always not released, from 1 factorial to n factorial

sum + = ret;

}

printf ( "%d\n", sum);

System ( "pause");

return 0;

}

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To find the factorial of N and the factorial of the first n number and