Program to find Mean,Median,and Mode

#define SIZE 100
#include "stdio.h"
float mean_function(float[],int);
float median_function(float[],int);
float mode_function(float[],int);
int main()
{
int i,n,choice;
float array[SIZE],mean,median,mode;
printf("Enter No of Elements\n");
scanf("%d",&n);
printf("Enter Elements\n");
for(i=0;ia[j])
{
temp=a[j];
a[j]=a[i];
a[i]=temp;
}
}
if(n%2==0)
return (a[n/2]+a[n/2-1])/2;
else
return a[n/2];
}

float mode_function(float a[],int n)
{
return (3*median_function(a,n)-2*mean_function(a,n));
}