tinhtong.cpp

examples C,c++ codes programs

/*tinh tongS==x/1!+.....x/n!*/
# include <stdio.h>
#include<conio.h>0

int giaithua(int m)
{
	int i;
	int tong;
	tong=1;

	for(i=1;i<=m;i++)
		{
		tong=tong*i;
		}
 return tong;
}

void main()
{
	clrscr();
	float tong;
	tong=0;
	int n,x,i;
	printf("nhap x:");
	scanf("%d",&x);
	printf("nhap n:");
	scanf("%d",&n);
	for(i=1;i<=n;i++)

		tong=tong+x/float(giaithua(i));

	printf("tong  %f",tong);


	getch();
}