Homework from Liangzhenwen #52
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gutouyu
reviewed
Mar 12, 2017
Diophantus.c
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| using namespace std; | ||
| int main(int argc, char** argv) | ||
| { | ||
| int FatherAge=0; |
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无论是驼峰命名法还是unix的那种，普通变量一般首字母不大写哈
Diophantus.c
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| @@ -0,0 +1,18 @@ | |||
| #include <iostream> | |||
| using namespace std; | |||
| int main(int argc, char** argv) | |||
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- 这里加个换行符，增加可读性
- 文件后缀是.c 怎么开头就是两行c++哦，不要干这种披着c外衣的c++哈
Diophantus.c
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| { | ||
| if((1.0/6.0*j+1.0/12.0*j+1.0/7.0*j+5+i+4==j)&&(2*i==j)) | ||
| { | ||
| FatherAge=j; |
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如果找到父亲的年龄了，那么是不是就可以退出循环了那？
Goldbach.c
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| @@ -0,0 +1,54 @@ | |||
| #include <iostream> | |||
| using namespace std; | |||
| int main() | |||
Goldbach.c
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| int main() | ||
| { | ||
| int a[25]; //��� | ||
| bool Judge = 0; |
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- 通常情况下，变量首字母小写，常量会全部大写
- bool类型只有c++里面才有哦 俸爷要求用c写哦
allPrimes.c
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| #include <time.h> | ||
| /*bool pd(int n) | ||
| { | ||
| for(int i=2;i<=n/2;i++) //�˳��������� |
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这里循环结束最优不是n/2 而是sqrt(n)，不注意就弄错了哈
| } | ||
| } | ||
| return 0; | ||
| } */ |
Encrypted.c
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| int main() | ||
| { | ||
| char p[10000]; | ||
| int Judge = 0; |
| else if (Judge == 2) | ||
| { | ||
| Decrypte(p); | ||
| } |
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对于if elseif结构，最后要有一个else接住剩下的情况，这里就可以提示用户输入不对，只能输入1或者2
Encrypted.c
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| #include <stdio.h> | ||
| #include <string.h> | ||
| #include <stdlib.h> | ||
| void Encrypte(char* p) |
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method上面还是加个换行哈，增加可读性 不要都挤在一起
两个质数表都是用程序打出来的 这样输出素数更快，但缺点是不适用于大数量的素数，2-1000还是可以的
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