#include <stdio.h>
#define n 20
int main()
{
int i,j;
double s0=1,s=0;
for(i=1;i<=n;i++,s0=1)
{
for(j=1;j<=i;j++)
s0=s0*j;
s=s+s0;
}
printf("the sum is %lf\n",s);
return 0;
}
#include <stdio.h>
#define n 20
int main()
{
int i,j;
double s0=1,s=0;
for(i=1;i<=n;i++,s0=1)
{
for(j=1;j<=i;j++)
s0=s0*j;
s=s+s0;
}
printf("the sum is %lf\n",s);
return 0;
}
本文标题:计算1!+2!+..........20!
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