Zhejiang University Edition "C language programming experiment and exercise guide (3rd Edition)" topic set

experiment 5-7 Use the function to find 1 To 10 Factorials of and

fraction  10

Full screen browsing topics

Switch layout

author   Zhang Gaoyan

Company   Zhejiang University City College

This problem requires a simple function to calculate the factorial of non negative integers , Makes it possible to use this function , Calculation 1!+2!+⋯+10! Value .

Function interface definition ：

double fact( int n );

among n Is the parameter passed in by the user , Its value does not exceed 10. If n Is a nonnegative integer , Then the function must return n The factorial .

Sample referee test procedure ：

#include <stdio.h> double fact( int n ); int main(void) { int i; double sum; sum = 0; for(i = 1; i <= 10; i++) sum = sum + fact(i); printf("1!+2!+...+10! = %f\n", sum); return 0; } /* Your code will be embedded here */

sample input ：

There is no input for this question .

sample output ：

1!+2!+...+10! = 4037913.000000

Code length limit

16 KB

The time limit

400 ms

Memory limit

64 MB

Code implementation ：

double fact( int n ){
	int i = 1;
	for(int j=1;j<=n;j++){
		i *= j;
	}
	return i;
	
}