- 572 名前：デフォルトの名無しさん mailto:sage [2009/04/01(水) 16:47:29 ]
- >>569
#include <stdio.h>
#include <math.h>
double kei(const double *data, unsigned int n)
{
unsigned int i;
double sum = 0.0;
for(i = 0 ; i < n; i++){ sum += data[i]; }
return sum;
}
double ave(const double *data, unsigned int n)
{ return kei(data, n) / n; }
double sd(const double *data, unsigned int n)
{
unsigned int i;
double a = ave(data, n), t = 0.0;
for(i = 0 ; i < n; i++)
{ t += (data[i]-a)*(data[i]-a); }
return sqrt(t/n);
}
int main()
{
unsigned int n = 0;
double data[1024];
while(!n || data[n-1] != 0.0){ scanf("%lf", data+n); n++; }
printf("kei: %lf\nave: %lf\nsd: %lf\n", kei(data,n), ave(data,n), sd(data,n));
return 0;
}
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