1.編寫程式檢視系統如何處理整數上溢和浮點數上溢和下溢情況。
#include<stdio.h>
int main(void)
{
int int_a = -1;
float float_a = -1.0;
for (int i = 1; i <= 128; i++)
{
int_a *= 2;
float_a *= 2;
printf("2^%d = %d\t\t\t 2^ %d = %f\n", i, int_a, i, float_a);
}
getchar(); getchar(); //在VS中讓視窗停留
return 0;
}
2.提示輸入一個ASCII碼,然後列印對應的字元。
#include<stdio.h>
int main(void)
{
int ascii_n;
char ascii_c;
printf("請輸入一個ASCII碼:");
scanf_s("%d", &ascii_n);
ascii_c = ascii_n;
printf("%c", ascii_c);
getchar(); getchar(); //在VS中讓視窗停留
return 0;
}
3.發出響鈴,然後列印一串文本
#include<stdio.h>
int main(void)
{
printf("\a");
printf("Startled by the sudden sound, Sally shouted,\n");
printf("\"By the Great Pumpkin, what was that! \"");
getchar(); getchar(); //在VS中讓視窗停留
return 0;
}
4.讀取一個浮點數,以小數和指數形式列印
#include<stdio.h>
int main(void)
{
float float_n;
printf("Enter a floating-point value: ");
scanf_s("%f", &float_n);
printf("fixed-point notation:%f\n",float_n); //小數點形式
printf("exponential notation:%e\n", float_n); // 指數形式
printf("p notation: %a\n" ,float_n); //十六進制
getchar(); getchar(); //在VS中讓視窗停留
return 0;
}
5.一年大概有3.156 x 10^7 秒。 輸入年齡,轉換成對應的秒。
#include<stdio.h>
int main(void)
{
int age;
const float secondsOfAYear = 3.156e7;
printf("輸入年齡: ");
scanf_s("%d", &age);
printf("相當于 %f 秒\n" ,secondsOfAYear*age);
getchar(); getchar(); //在VS中讓視窗停留
return 0;
}
6. 1個水分子品質為 3 * 10 ^-23 g , 1 誇脫的水是950g.輸入誇脫數,轉換成水分子數,
#include<stdio.h>
int main(void)
{
float quart;
const float water = 3.0e23;
const int aquart = 950;
printf("輸入水的誇脫數: ");
scanf_s("%f", &quart);
printf("相當于 %f 個水分子\n" ,quart*aquart*water);
getchar(); getchar(); //在VS中讓視窗停留
return 0;
}
7. 1英寸相當于2.54厘米,輸入英寸轉換厘米。
#include<stdio.h>
int main(void)
{
const float inchToCm = 2.54;
float inch;
printf("請輸入英寸:");
scanf_s("%f", &inch);
printf(" %f英寸相當于%f厘米", inch, inch*2.54);
getchar(); getchar(); //在VS中讓視窗停留
return 0;
}
8.機關轉換
#include<stdio.h>
int main(void)
{
float cup;
printf("輸入杯數:");
scanf_s("%f", &cup);
printf("相當于%f品脫\n%f盎司\n%f大湯勺\n%f茶勺", cup / 2,8*cup,16*cup,48*cup);
getchar(); getchar(); //在VS中讓視窗停留
return 0;
}