/* max-array-func.c */ 
#include <stdio.h>
#define N 100 
int max(double a[],int n); 

int main(void)
{
   int n, nmax; 
   double a[N]; 

   n = 0; 
   while( scanf("%lf",&a[n]) != EOF ) 
     n++; 
   nmax = max( a, n ); 

   printf( "最大値はa[%d]=%g\n", nmax, a[nmax] ); 

   return 0; 
} 

int max(double a[], int n) 
{ 
   int i, imax; 

   imax = 0; 
   for ( i = 1; i < n; i++ ){
     if ( a[imax] < a[i] ) 
       imax = i; 
   } 

   return imax; 
}