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//若有不足之处请提出,博主会尽所能修改;
//附上课后编程练习题目;
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//3.11 - 1.c
#include <stdio.h>
#include <float.h>
#include <limits.h>
int main(void)
{
int big_int = 2147483647;
//↑signed int最大值是2的31次方减1;
float big_float = 3.4e38;
//↑float最大值一般是3.4E38;
float small_float = 10.0 / 3;
//↑float有效位数是6位;
printf("The big int data is %d.\n", big_int + 1);
//↑整型数据最大值+1会造成越界,结果是-2147493648;
printf("The big float data is %f.\n", big_float * 10);
//↑float最大值*10会造成越界,结果是inf;
printf("The big bit float data is %f.\n", small_float);
//↑float最大有效精度;
printf("The max float data is %f.\n", FLT_MAX);
//↑float类型最大值;
printf("The max int data is %ld.\n", INT_MAX);
//↑int类型最大值;
return 0;
}
//-------------
//3.11 - 2.c
#include <stdio.h>
int main(void)
{
int ch;
printf("Please you enter a ASCII value:");
scanf("%d", &ch);
printf("ASCII %d is %c.\n", ch, ch);
return 0;
}
//-------------
//3.11 - 3.c
#include <stdio.h>
int main(void)
{
printf("\a");
printf("Startled by the sudden sound, ");
printf("Sally shouted,\n");
printf("\"By the Great Pumpkin, what was that!\"\n");
return 0;
}
//-------------
//3.11 - 4.c
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#include <stdio.h>
int main(void)
{
float number;
printf("Enter a float-point value:");
scanf("%f", &number);
printf("fixed-point notation: %f\n", number);
//↑小数点形式;
printf("exponential notation: %e\n", number);
//↑指数形式;
printf("p notation: %a\n", number);
//↑十六进制记数法;
return 0;
}
//-------------
//3.11 - 5.c
#include <stdio.h>
#define SEC_PER_YEAR 3.156e7
int main(void)
{
double age, seconds;
printf("Please enter your age:");
scanf("%lf", &age);
seconds = age * SEC_PER_YEAR;
printf("%g years old includes %g seconds.\n", age, seconds);
return 0;
}
//-------------
//3.11 - 6.c
#include <stdio.h>
#define MASS_PER_MOLE 3.0e-23
#define MASS_PER_QUART 950
int main(void)
{
double quart, molecules;
printf("Please enter a quart for water:");
scanf("%lf", &quart);
//1夸脱水大约是950克;
//1个水分子质量约为3.0 * 10^(-23)克;
molecules = quart * MASS_PER_QUART / MASS_PER_MOLE;
printf("%g quart water includes %e water molecules.\n", quart, molecules);
return 0;
}
//-------------
//3.11 - 7.c
#include <stdio.h>
#define CM_PER_INCH 2.54
int main(void)
{
double inch, cm;
printf("Please enter your height(inch): ");
scanf("%lf", &inch);
cm = inch * CM_PER_INCH;
//1英寸相当于2.54厘米;
printf("Your height is %g cm.\n", cm);
return 0;
}
//-------------
//3.11 - 8.c
#include <stdio.h>
#define PINT_PER_CUP 2
#define CUP_PER_OUNCE 8
#define OUNCE_PER_BIGSPOON 2
#define BIGSPOON_PER_TEASPOON 3
int main(void)
{
double pint, ounce, cup;
double bigspoon, teaspoon;
printf("Please you enter a number of cups: ");
scanf("%lf", &cup);
pint = cup / PINT_PER_CUP;
ounce = cup * CUP_PER_OUNCE;
bigspoon = ounce * OUNCE_PER_BIGSPOON;
teaspoon = bigspoon * BIGSPOON_PER_TEASPOON;
printf("Here are some ways to show %g cups\n", cup);
printf("Pint: %g\n", pint);
printf("Ounce: %g\n", ounce);
printf("Bigspoon: %g\n", bigspoon);
printf("Teaspoon: %g\n", teaspoon);
return 0;
}
//-------------
//----------------------------2020年4月2日 -------------------------------