文章编号：1402 / 更新时间：2024-12-30 12:07:00 / 浏览：次

目录

1. 第一章
2. 第二章
3. 第三章
4. 第四章
5. 第五章
6. 第六章

第一章

练习 1-1

include int main() {printf("Hello, world!\n");return 0;
}

练习 1-2

include int main() {int num;printf("请输入一个整数：");scanf("%d", &num);printf("您输入的整数是：%d\n", num);return 0;
}

练习 1-3

include int main() {float fnum;printf("请输入一个浮点数：");scanf("%f", &fnum);printf("您输入的浮点数是：%f\n", fnum);return 0;
}

第二章

练习 2-1

include int main() {int a = 10, b = 20;printf("a + b = %d\n", a + b);printf("a - b = %d\n", a -b);printf("a  b = %d\n", a  b);printf("a / b = %d\n", a / b);printf("a %% b = %d\n", a % b);return 0;
}

练习 2-2

include int main() {int a = 5, b = 3;printf("a++ = %d\n", a++);  // 后自增printf("++a = %d\n", ++a);  // 先自增printf("b-- = %d\n", b--);  // 后自减printf("--b = %d\n", --b);  // 先自减return 0;
}

练习 2-3

include int main() {int a = 10, b = 20;a += 5;  // 等价于 a = a + 5b -= 10;  // 等价于 b = b - 10printf("a = %d, b = %d\n", a, b);return 0;
}

第三章

练习 3-1

include int main() {int a;if (a > 0) {printf("a 是正数\n");} else if (a < 0) {printf("a 是负数\n");} else {printf("a 等于 0\n");}return 0;
}

练习 3-2

include int main() {int score;printf("请输入您的成绩：printf("良好\n");break;case 80:printf("中等\n");break;case 60:printf("及格\n");break;default:printf("不及格\n");break;}return 0;
}

练习 3-3

include int main() {int n, i;printf("请输入一个整数：");scanf("%d", &n);for (i = 1; i <= n; i++) {printf("%d ", i);}printf("\n");return 0;
}

第四章

练习 4-1

include int main() {int n, i, sum = 0;printf("请输入一个整数：");scanf("%d", &n);for (i = 1; i <= n; i++) {sum += i;}printf("1 到 %d 的和为：%d\n", n, sum);return 0;
}

练习 4-2

include int main() {int n, i, j;printf("请输入一个正整数：");scanf("%d", &n);for (i = 1; i <= n; i++) {for (j = 1; j <= i; j++) {printf("");}printf("\n");}return 0;
}

++) {printf(" ");}for (k = 1; k <= 2 i - 1; k++) {printf("");}printf("\n");}return 0; }

第五章

练习 5-1

include int main() {int n, i, j;printf("请输入一个正整数：");scanf("%d", &n);for (i = 1; i <= n; i++) {for (j = 1; j <= n; j++) {printf("%d ", i  j);}printf("\n");}return 0;
}

练习 5-2

include int main() {int n, i, j, sum;printf("请输入一个正整数：");scanf("%d", &n);for (i = 1; i <= n; i++) {sum = 0;for (j = 1; j <= i; j++) {sum += j;}printf("%d ", sum);}printf("\n");return 0;
}

练习 5-3

include int main() {int n, i, j, sum;printf("请输入一个正整数：");scanf("%d", &n);for (i = 1; i <= n; i++) {sum = 0;for (j = 1; j <= n / i; j++) {sum += i  j;}printf("%d ", sum);}printf("\n");return 0;
}

第六章

练习 6-1

include int main() {int n, i, j, k;printf("请输入一个正整数：");

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