请问一下为什么c一直等于一啊

Question

#include<stdio.h>
int main ()
{
int a, b;
float c, d;
c = 0;
d=0;
b = 0;
for (int i = 1; i <= 10; i++)
{
printf("Input integer:");
scanf("%d",&a);
if (a > 0)
{
b++;
}
c+=a;
printf("%d,%d",a,c);
}
d = c / 10;

printf("Plus number:%d,average value:%.2f", b, d);

return 0;

Answer 1

printf("%d,%d",a,c); 改为printf("%d,%f",a,c); c为float型