題目一：簡單輸出

- #include<stdio.h>
- int main()
- {
- printf("zhaoqi! \n");
- return 0;
- }

題目二：計算圓的面積

- #define PI 3.14
- double(alculatevolume lint radius);
- int main()
- {
- int cRadius =0;
- double square=0.0;
- printf ("請輸入圓的半徑: \n");
- scanf("%d";&cRadius);
- square=calculatesquare (cRadius);
- printf("請輸入圓的面積是:%f \n",square);
- return 0;
- }
- double calculateVolume (int radius)
- {
- double result = PI*radius*radius;
- return result;
- }