//很简单
#include
int main()
{
int i=0,j=0,f=0;
double sum = 0;
f = 1;
for(i=1;i<=10;i++)
{
f*=i;
sum+=1.0/f;
}
printf("sum=%.2f\n",sum);
return 0;
}
#include
int main(){
int i=0,j=0;
double sum=0,f=0;
for(i=1;i<=10;i++){
for(j=1,f=1;j<=i;j++)
{
f*=j;
}
sum+=double(1/f);
}
printf("sum=%f\n",sum);
return 0;
}