啊哈C——学习5.6练习

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2015年2月3日22:36:09

1.请在4~100内验证哥德巴赫猜想，输出每一个偶数的所有可能的拆分方法。例如：

4 = 2 + 2

6 = 3 + 3

8 = 3 + 5

10 = 3 + 7 = 5 + 5

12 = 5 + 7

14 = 3 + 11 = 7 + 7

……

#include <stdio.h>#include <stdlib.h>int main(){int iNum,iTest,iFirst,iSecond,bFirst,bSecond;        for(iNum = 4;iNum <= 100;iNum += 2)    {printf("%d",iNum);for(iFirst = 2;iFirst <= iNum/2;iFirst++)        {//Decide firstbFirst = 0;            for(iTest = 2;iTest < iFirst;iTest++){if(0 == iFirst%iTest)                {bFirst = 1;break;                }}                        if(0 == bFirst)            {iSecond = iNum - iFirst;bSecond = 0;for(iTest = 2;iTest < iSecond;iTest++){if(0 == iSecond%iTest){bSecond = 1;break;}}                                if(0 == bSecond)                {printf("=%d+%d",iFirst,iSecond);                }            }        }        printf("\r\n");    }system("pause");return 0;}

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