第七题
square3.c代码
#include<stdio.h>int main()
{ int i, n, odd, square;printf("This program prints a table of squares.\n");printf("Enter number of entries in table: ");scanf_s("%d", &n);i = 1;odd = 3;for (square = 1; i <= n; odd+=2){printf("%10d%10d\n", i, square);++i;square += odd;}return 0;
}示例代码
#include<stdio.h> int main()
{int i, n;int currentSquare = 1; // 当前平方数 int oddIncrement = 3; // 每次增加的奇数 printf("This program prints a table of squares.\n");printf("Enter number of entries in table: ");scanf_s("%d", &n);for (i = 1; i <= n; ++i){printf("%10d%10d\n", i, currentSquare);currentSquare += oddIncrement;oddIncrement += 2; // 下一个奇数 }return 0;
}输出
第八题
代码示例
#include <stdio.h> int main() {int daysInMonth, startDay;int i, day = 1;// 获取用户输入 printf("Enter the number of days in month: ");scanf_s("%d", &daysInMonth);printf("Enter starting day of the week: ");scanf_s("%d", &startDay);// 输出日历标题 printf("Sun Mon Tue Wed Thu Fri Sat\n");// 输出日历前的空格 for (i = 1; i < startDay; i++) {printf(" ");}// 输出日历 while (day <= daysInMonth) {printf("%3d ", day);if ((day + startDay - 1) % 7 == 0) {printf("\n");}day++;}// 如果最后一行没有填满，则换行 if ((day + startDay - 2) % 7 != 0) {printf("\n");}return 0;
}输出
第九题
代码示例
#include <stdio.h> float calculate_remaining_balance(float balance, float rate, float payment);int main()
{float loan = 0.0f;float payment = 0.0f;float rate = 0.0f;int numberOfPayments = 0;// 获取用户输入 printf("Enter amount of loan: ");scanf_s("%f", &loan);printf("Enter interest rate (as a percentage): ");scanf_s("%f", &rate);printf("Enter monthly payment: ");scanf_s("%f", &payment);printf("Enter number of payments: ");scanf_s("%d", &numberOfPayments);// 初始化当前余额为贷款金额 float currentBalance = loan;// 输出标题 printf("\nPayment\tRemaining Balance\n");printf("---------------------------\n");// 循环计算每次还贷后的剩余金额 for (int i = 1; i <= numberOfPayments; i++){currentBalance = calculate_remaining_balance(currentBalance, rate, payment);printf("%d\t\t%.2f\n", i, currentBalance);}return 0;
}// 计算剩余金额的函数
float calculate_remaining_balance(float balance, float rate, float payment)
{// 先计算一个月的利息，然后从余额中减去支付金额 float interestForMonth = balance * ((rate / 100.0f) / 12.0f);float newBalance = balance - payment + interestForMonth;return newBalance;
}输出
第十题
示例代码
#include <stdio.h>
#include <stdlib.h>
#include <limits.h> // 用于INT_MAX #define MAX_DATES 100 // 定义最大日期数量 // 日期结构体
typedef struct {int month;int day;int year;
} Date;// 函数声明
Date findEarliestDate(Date dates[], int count);int main() {Date dates[MAX_DATES];int count = 0;while (1) {int month, day, year;printf("Enter date (mm/dd/yy) (0/0/0 to end): ");if (scanf_s("%d/%d/%d", &month, &day, &year) != 3) {printf("输入错误，请重新输入。\n");continue;}// 检查是否为结束输入的信号 if (month == 0 && day == 0 && year == 0) {break;}// 存储日期 dates[count].month = month;dates[count].day = day;dates[count].year = year;count++;// 检查是否达到最大日期数量 if (count >= MAX_DATES) {printf("已达到最大日期数量限制。\n");break;}}// 如果没有输入任何日期，则不执行后续操作 if (count == 0) {printf("没有输入任何日期。\n");return 0;}// 找出并打印最早的日期 Date earliestDate = findEarliestDate(dates, count);printf("最早的日期是：%02d/%02d/%02d\n", earliestDate.month, earliestDate.day, earliestDate.year);return 0;
}// 找出最早日期的函数
Date findEarliestDate(Date dates[], int count) {Date earliest = { INT_MAX, INT_MAX, INT_MAX }; // 初始化为一个非常大的日期 for (int i = 0; i < count; i++) {if (dates[i].year < earliest.year ||(dates[i].year == earliest.year && dates[i].month < earliest.month) ||(dates[i].year == earliest.year && dates[i].month == earliest.month && dates[i].day < earliest.day)) {earliest = dates[i];}}return earliest;
}输出
第十一题
示例代码
#include <stdio.h> int main() {int N;printf("请输入N的值：");scanf_s("%d", &N);// 初始化e的近似值和当前项的倒数 double e_approx = 1.0; // 第一项是1/0! = 1 double term = 1.0; // 当前项的倒数，初始化为1/1! // 计算e的近似值 for (int n = 1; n <= N; n++) {term /= n; // 计算下一项的倒数 e_approx += term; // 累加到e的近似值中 }printf("e的近似值（使用%d项）是：%.15f\n", N, e_approx);return 0;
}输出
第十二题
示例代码
#include <stdio.h> int main() {int n = 0; // 初始化项数计数器 double epsilon; // 定义epsilon变量 double e_approx = 1.0; // e的近似值初始化为1.0（即第一项1/0!） double term = 1.0; // 当前项的倒数，从1/1!开始 // 询问用户输入epsilon值 printf("请输入一个较小的浮点数epsilon：");scanf_s("%lf", &epsilon);// 验证输入的epsilon是否大于0 if (epsilon <= 0) {printf("输入的epsilon必须大于0。\n");return 1;}// 持续执行加法运算，直到当前项小于epsilon while (term >= epsilon) {n++; // 项数计数器加1 term /= n; // 计算下一项的倒数（即1/n!） e_approx += term; // 将当前项累加到e的近似值中 }// 输出e的近似值和达到该近似值所需的项数 printf("为达到小于%.15f的精度，使用了%d项。\n", epsilon, n);printf("e的近似值是：%.15f\n", e_approx);return 0;
}输出
