#include <stdio.h> #define LENTEST 100
// 采取逐步删除的方法求的素数
//先假设1-100都是素数,然后剔除2的倍数,
//3的倍数,直到剔除所有的倍数关系
int main()
{
int i = 0, j = 0;
int bop[LENTEST] = {0}; for(i = 0; i < LENTEST; i++)
{
bop[i] = 1;
} for(i = 2; i < LENTEST; i++)
{
if(bop[i])
{
for(j = 2; j*i < LENTEST; j++)
{
bop[j*i] = 0;
}
}
} for(i = 2; i < LENTEST; i++)
{
if(bop[i])
{
printf("%d ", i);
}
}
printf("\n"); return 0;
}
C语言关于结构体封装的测试(http://www.cnblogs.com/hdu-2010/p/3653470.html)
#include <stdio.h>
#include <stdlib.h>
#include <string.h> struct bitTest{ char *p; //
char T1[]; //
double x;//
char T2[]; //
int y;//
}; int main()
{
struct bitTest test;
memset(&test, 0x0, sizeof(test)); printf("%p\n%p\n%p\n%p\n%p\n", &test.p, test.T1, &test.x, test.T2, &test.y);
printf("%d\n%d\n", (&test.x - &test.p), (&test.y - &test.x));
//printf("%p\n%p\n", test.T1, &test.T1); //printf("%c %d, {%d, %d}\n", test.p, test.tergen, test.array[0], test.array[1]);
printf("%d\n", sizeof(struct bitTest));
printf("%d\n", sizeof(long double)); system("pause");
return ;
}
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68yb55AzmAgMzr10SOy04HcoAAmdevycEDcgCW01eviB+QA7CcvnpF/IAcgCX955+eHO025AABUn/+Sfy4gByAIbWxATmAmNTGBjl4QA7AktrYIH5ADsDiybGxATkAS/LlyyTkAEIgB5CSfPky+fJlamNj0mpBDhAg8ccfxA/IARj+D+/fNm6UPG2MAAAAAElFTkSuQmCC" alt="" />
C语言链表翻转
typedef struct flim{
char title[TSIZE];
int rating;
struct film *next;
}Flim; void reverse2(Flim **head); void reverse2(Flim **head)
{
if(*head != NULL && (*head)->next != NULL)
{
Flim *tmp1 = (*head);
Flim *tmp2 = (*head);
Flim *tmp3 = (*head)->next; tmp1->next = NULL;
while(tmp3->next != NULL)
{
tmp2 = tmp3;
tmp3 = tmp3->next;
tmp2->next = tmp1;
tmp1 = tmp2;
}
tmp3->next = tmp2;
(*head) = tmp3;
}
}