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#2
自学的数学2018-06-21 22:52
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#include<stdio.h>
#include<ctype.h>
int main(void)
{
double value = 0.0;
double sum = 0.0;
unsigned int count = 0;
char answer = 0;
for(;;)
{
printf("\nEnter a value:");
scanf("%lf",&value);
sum += value;
++count;
printf("\nDo you want countinue. (y or n)?:");
scanf("%c",&answer);
if('n' == tolower(answer))
break;
}
printf("\nyou have input %d number ,and the average of these number is %.2lf",count,sum/count);
return 0;
}
程序如上，其中scanf("%c",&answer);这句，程序直接跳过，不需要输入。请问是那里出错了？执行结果如下：
Enter a value:3
Do you want countinue. (y or n)?:
Enter a value:2
Do you want countinue. (y or n)?:
Enter a value:1
Do you want countinue. (y or n)?:
Enter a value:n
Do you want countinue. (y or n)?:
you have input 4 number ,and the average of these number is 1.75请按任意键继续.
. .
程序代码：
}