scanf的返回值由后面的参数决定
scanf("%d%d", &a, &b);
如果a和b都被成功读入，那么scanf的返回值就是2
如果只有a被成功读入，返回值为1
如果a和b都未被成功读入，返回值为0
如果遇到错误或遇到end of file，返回值为eof
且返回值为int型.相关文章
- #include <> typedef struct Node { int index; struct Node *next; }JosephuNode; int Josephu(int n, int m) { int i, j; JosephuNode *head, *tail; head = tail = (JosephuNode *)malloc(sizeof(JosephuNode)); for (i = 1; i < n; ++i) { tail->index = i; tail->next = (JosephuNode *)malloc(sizeof(JosephuNode)); tail = tail->next; } tail->index = i; tail->next = head; for (i = 1; tail != head; ++i) { for (j = 1; j < m; ++j) { tail = head; head = head->next; } tail->next = head->next; printf("第%4d个出局的人是：%4d号\n", i, head->index); free(head); head = tail->next; } i = head->index; free(head); return i; } int main { int n, m; scanf("%d%d", &n, &m); printf("最后胜利的是%d号！\n", Josephu(n, m)); system("pause"); return 0; }">设编号为1，2，… n的n个人围坐一圈，约定编号为k（1数组实现： #include <> #include <> int Josephu(int n, int m) { int flag, i, j = 0; int *arr = (int *)malloc(n * sizeof(int)); for (i = 0; i < n; ++i) arr[i] = 1; for (i = 1; i < n; ++i) { flag = 0; while (flag < m) { if (j == n) j = 0; if (arr[j]) ++flag; ++j; } arr[j - 1] = 0; printf("第%4d个出局的人是：%4d号\n", i, j); } free(arr); return j; } int main { int n, m; scanf("%d%d", &n, &m); printf("最后胜利的是%d号！\n", Josephu(n, m)); system("pause"); return 0; } 链表实现： #include <> #include <> typedef struct Node { int index; struct Node *next; }JosephuNode; int Josephu(int n, int m) { int i, j; JosephuNode *head, *tail; head = tail = (JosephuNode *)malloc(sizeof(JosephuNode)); for (i = 1; i < n; ++i) { tail->index = i; tail->next = (JosephuNode *)malloc(sizeof(JosephuNode)); tail = tail->next; } tail->index = i; tail->next = head; for (i = 1; tail != head; ++i) { for (j = 1; j < m; ++j) { tail = head; head = head->next; } tail->next = head->next; printf("第%4d个出局的人是：%4d号\n", i, head->index); free(head); head = tail->next; } i = head->index; free(head); return i; } int main { int n, m; scanf("%d%d", &n, &m); printf("最后胜利的是%d号！\n", Josephu(n, m)); system("pause"); return 0; }
- =0; i--)
{
printf("%d", a[i]);
if(i>0)
printf(" ");
else
printf("\n");
}
return 0;
}
转载于:/6bing/p/
">输入包括两行，第一行是一个正整数N（N
#include<>
int a[1100001];
int pp(int low,int h)
{
int key=a[low];
while(low < h)
{
while(key <= a[h] && low < h) h--;
a[low]=a[h];
while(key >= a[low] && low < h) low++;
a[h]=a[low];
}
a[low]=key;
return low;
}
void paixu(int low, int h)
{
if(low>=h)
return ;
int mid=pp(low,h);
paixu(low,mid-1);
paixu(mid+1,h);
}
int main
{
int i;
int n;
scanf("%d",&n);
for(i=0;i
- scanf———while(scanf ("%lu",&num) = =1)什么意思