//このブロガーによって書かれたコードは読者の参照用です。
//欠点がある場合は、それを上げてください。ブロガーは最善を尽くして修正します。
//クラスの後にプログラミング練習の質問を添付します。
//それがあなたにとって有用であるならば、それを好きにするか、他の人と共有してください。
//5.11-1.c
#include <stdio.h>
#define MIN_PER_HOUR 60
int main(void)
{
int m, hour, min;
printf("Please enter a number for minute (<= 0 to quit): ");
while ((scanf("%d", &m) == 1) && (m > 0))
{
hour = m / MIN_PER_HOUR;
min = m % MIN_PER_HOUR;
printf("%d minutes = %d hours and %d minutes.\n", m, hour, min);
printf("You can enter again (<= 0 to quit): ");
}
printf("Done.\n");
return 0;
}
// -------------
//5.11-2.c
#include <stdio.h>
#define LEN 10
int main(void)
{
int n;
int i = 0;
printf("Please enter a number: ");
scanf("%d", &n);
printf("Print %d to %d:\n", n, n + 10);
while (i <= LEN)
{
printf("%d\n", n + i);
i++;
}
printf("Done.\n");
return 0;
}
// -------------
//5.11-3.c
#include <stdio.h>
#define DAYS_PER_WEEK 7
int main(void)
{
int n, week, days;
printf("Please enter days (<=0 to quit): ");
while ((scanf("%d", &n) == 1) && (n > 0))
{
week = n / DAYS_PER_WEEK;
days = n % DAYS_PER_WEEK;
printf("%d days are %d weeks, %d days.\n", n, week, days);
printf("You can enter again (<=0 to quit): ");
}
return 0;
}
// -------------
//5.11- 4.c
#include <stdio.h>
#define CM_PER_INCH 2.54f
#define CM_PER_FEET 30.48f
int main(void)
{
int feet;
float cm, inch;
printf("Enter a height in centimeters: ");
while ((scanf("%f", &cm) == 1) && (cm > 0))
{
feet = (int)(cm / CM_PER_FEET);
inch = (cm - CM_PER_FEET * feet) / CM_PER_INCH;
printf("%.1f cm = %d feet, %.1f inches\n", cm, feet, inch);
printf("Enter a height in centimeters (<=0 to quit): ");
}
printf("bye\n");
return 0;
}
// -------------
//5.11-5.c
#include <stdio.h>
int main(void)
{
int n, sum, count;
sum = 0;
printf("Enter the number of days you work: ");
scanf("%d", &count);
n = count;
while (count > 0)
{
sum += count;
count--;
}
printf("You earned $%d in %d days.\n", sum, n);
return 0;
}
// -------------
//5.11- 6.c
#include <stdio.h>
int main(void)
{
int n, sum, count;
sum = 0;
printf("Enter the number of days you work: ");
scanf("%d", &count);
n = count;
while (count > 0)
{
sum += count * count;
count--;
}
printf("You earned $%d in %d days.\n", sum, n);
return 0;
}
// -------------
//5.11-7.c
#include <stdio.h>
void cube(double c);
int main(void)
{
double n;
printf("Please you enter a double number: ");
scanf("%lf", &n);
cube(n);
return 0;
}
void cube(double c)
{
printf("The cube of %g is %g.\n", c, c * c * c);
return;
}
// -------------
//5.11-8.c
#include <stdio.h>
int main(void)
{
int f_o, s_o;
printf("This program computes moduli.\n");
printf("Enter an integer to serve ");
printf("as the second operand: ");
scanf("%d", &s_o);
printf("Now enter the first operand: ");
while ((scanf("%d", &f_o) == 1) && (f_o > 0))
{
printf("%d %% %d is %d\n", f_o, s_o, f_o % s_o);
printf("Enter next number for first operand (<= 0 to quit): ");
}
printf("Done\n");
return 0;
}
// -------------
//5.11-9.c
#include <stdio.h>
void Temperatures(double f_t);
int main(void)
{
double temp;
printf("Please enter a temperature number (q to quit): ");
while (scanf("%lf", &temp) == 1)
{
Temperatures(temp);
printf("You can enter again (q to quit): ");
}
printf("Done.\n");
return 0;
}
void Temperatures(double f_t)
{
const double f_val = 32.0;
const double k_val = 273.16;
double t = 5.0 / 9.0 * (f_t - f_val);
//↑摄氏温度 = 5.0 / 9.0 * (华氏温度 - 32);
double k_t = t + k_val;
//↑开氏温度 = 摄氏温度 + 273.16;
printf("Centigrade temperature: %.2lf°C\n", t);
printf("Fahrenheit temperature: %.2lf°C\n", f_t);
printf("Kelvin temperature: %.2lf°C\n", k_t);
return;
}
// -------------
// -------------------------- 2020年4月3日--------------- ---------------