Question

redefinition; different basic types错误

求大神帮助！！ 出现redefinition; different basic types错误，不知道怎么改。
# include <stdio.h>
void remove(double *p,double d);
main()
{
double p[20]={3,23,-7,8,9,10};
double d;
int i=0;
int j=0;
scanf("%lf",&d);
while (p[i]!=0)
{
printf("%lf",p[i]);
i++;
}
remove(p,d);
while (p[j]!=0)
{
printf("%lf",p[j]);
j++;
}
}
void remove(double *p,double d)
{
int i=0;
while(*p!=d)
p++;
*p=*p++;
}

Answer 1

改好了
主要是void printff(float score[10],float ave) 与库函数printf重复了
#include <stdio.h>
void readdata (float score[10])
{
int i;
printf("enter 10 student's scores:\n");
for(i=0;i<10;i++)
scanf("%f",&score[i]);
return;
}

float aver(float score[10])
{
float sum;
int i;
for(sum=0,i=0;i<10;i++)
sum=sum+score[i];
return(sum/10);
}

void printff(float score[10],float ave)
{
int i;
printf("the score which are below the average:\n");
for(i=0;i<10;i++)
if(score[i]<ave)
printf("%8.2f",score[i]);
return;
}
main()
{
void readdata (float score[10]);
float aver(float score[10]);
void printff(float score[10],float ave);
float ave,score[10];
readdata(score);
ave=aver(score);
printf("average=%6.2f\n",ave);
printff(score,ave);
}