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原创猜1-100内的随机数字小游戏

#define _CRT_SECURE_NO_WARNINGS 1//猜数字游戏//1.电脑会生成一个随机数//2.猜数字#include<stdio.h>#include<stdlib.h>#include<time.h>#define RAND_MAX 0x7fffvoid menu() { printf("******************************\n"); printf("**** 1.play 0.exit .

2022-05-23 22:45:07 1457 1

原创作业三（二）

int main() { int i = 0; double sum = 0.0; int flag = 0; for (i = 1; i <= 100; i++) { sum +=flag* 1.0 / i; flag = -flag; }//1/2=商0余1，结果为0，一直加下去都是0，所以用双精度 printf("%if\n", sum); return 0;}int main() { int arr[] = { -1,-2,-3,-4,...

2022-05-19 22:49:52 337

原创 static.关键字，指针大小 ————作业三

#define _CRT_SECURE_NO_WARNINGS 1#include<stdio.h>int sum(int a){ int c = 0; static int b = 3; c += 1; b += 2; return (a+b+c);}int main() { int i; int a = 2; for (i = 0; i < 5; i++) { printf("%d,", sum(a)); }}int ...

2022-05-09 23:08:46 242

原创编写代码、（函数-cls-）（Sleep(自定义)；）

#define _CRT_SECURE_NO_WARNINGS 1#include <stdio.h>#include<string.h>int main() { char arr1[] = "welcome to bit!!!!!!"; char arr2[] = "####################"; int left = 0; //int right = sizeof(arr1) / sizeof(arr1[0]-2);...

2022-04-25 22:45:10 329

原创查找数组内某数字下标

int main() { int arr[] = { 1,2,3,4,5,6,7,8,9,10 }; int k = 7; int sz = sizeof(arr) / sizeof(arr[0]); int left = 0; int right = sz - 1; while (left <= right) { int mid = (left + right) / 2; if (arr[mid] >...

2022-04-25 20:13:24 896

原创有序数组中查找具体的某个数字n

int main() { int arr[] = { 1,2,3,4,5,6,7,8,9,10 }; int k = 7; int i = 0; int sz = sizeof(arr) / sizeof(arr[0]); for (i = 0; i < sz; i++) { if (k == arr[i]) { printf("找到了，下标是：%d\n", i); ...

2022-04-21 23:41:28 79

原创 for循环的语句控制变量

int main() { int arr[10] = { 1,2,3,4,5,6,7,8,9,10 }; int i = 0; for (i = 0; i < 10; i++) { printf("%d ", arr[i]); } return 0;}//左闭右开区间 [0,10）int main() {for(;;){ printf("hehe\n");} return 0;} ...

2022-04-14 01:12:38 483

原创 while循环

#define _CRT_SECURE_NO_WARNINGS 1#include <stdio.h>int main() { int i = 1; while (i<=10) { printf("%d ",i); i++; } return 0;}一int main() { int i = 1; while (i<=10) { ...

2022-04-08 23:29:19 276 1

原创 if语句取模运算+Switch语句

求余运算，判断奇偶数（i/2余0为偶，余1为奇）#define _CRT_SECURE_NO_WARNINGS 1#include <stdio.h>int main() { int i = 1; while (i<=100) { if (i % 2 == 1) printf("%d ", i); i++; } return 0;}星期if语句：int main(...

2022-04-05 23:58:22 163 1

原创 if语句（选择语句）

选择语句#include <stdio.h>int main() { int age =51; if (age < 18) printf("未成年\n"); else if (age >= 18 && age < 28) printf("青年\n"); else if (age >= 50 && age < 90) printf("壮年\n"...

2022-04-04 23:40:02 273 1

原创学习c语言

忘记学习第几天了，看的学习视频说写博客比较重要希望自己能坚持下去，第一次写博客也没经验，就附上一点点笔记吧#define _CRT_SECURE_NO_WARNINGS 1#include<stdio.h>int main(){ int num1 = 0; int num2 = 0; int sum = 0; scanf("%d%d", &num1, &num2); sum = num1 + num2; printf(...

2022-04-03 22:00:11 583 1

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