UC知道C中用while 语句求平均值 哪里错了？每次算sum都是0?我写的如下
来源：百度知道 编辑：UC知道 时间：2024/05/27 13:31:46
#include<stdio.h>
main(void)
{
int n,counter=1;
double average,sum=0,input;
printf("please enter the number of inputs\n");
scanf（"%d",&n);
while(counter<=n){
printf("enter a number:\n");
scanf("%f"，&input);
sum=sum+input;
counter=counter+1;
}
printf("the sum is %f",sum);
average=(float)sum/n;
printf("the average is %f",average);
}
main(void)
{
int n,counter=1;
double average,sum=0,input;
printf("please enter the number of inputs\n");
scanf（"%d",&n);
while(counter<=n){
printf("enter a number:\n");
scanf("%f"，&input);
sum=sum+input;
counter=counter+1;
}
printf("the sum is %f",sum);
average=(float)sum/n;
printf("the average is %f",average);
}
是粗心了吧，
这么声明：double average,sum=0,input;
然后这么赋值：scanf("%f"，&input);
将double强转float会出现极大的负值。
将声明改为以下即可：
float average,sum=0,input;