程式1:

#include

#include

int main()

{

int i;

float num;

float sum = 0;

i = 10;

while(i--)

{

scanf("%f",&num);

sum += num;

}

sum /= 10.0;

printf("輸入的十個數的平均數為: %f",sum);

getch();

return 0;

}

思考:

#include

#include

int main()

{

int i,amount;

float num;

float sum = 0;

printf("請輸入資料的總個數\n");

scanf("%d",&amount);

printf("請依次輸入%d個數據.\n",amount);

i = amount;

while(i--)

{

scanf("%f",&num);

sum += num;

}

sum = sum / (amount / 1.0);

printf("輸入的%d個數的平均數為: %f \n",amount,sum);

getch();

return 0;

}