while(scanf("%d%d",&a,&b)!

来源：学生作业帮助网编辑：作业帮时间：2024/11/16 16:39:36

while(scanf("%d%d",&a,&b)!
while(scanf("%d%d",&a,&b)!

while(scanf("%d%d",&a,&b)!
EOF=end of file 这回你知道什么意思了吧
scanf函数的返回值说明.
Returns the number of fields successfully converted and assigned; the return value does not include fields that were read but not assigned. A return value of 0 indicates that no fields were assigned.
If format is a NULL pointer, the invalid parameter handler is invoked, as described in Parameter Validation. If execution is allowed to continue, these functions return EOF and set errno to EINVAL.
EOF就是-1,是在stdio.h里定义的.
按照上面的说明,scanf函数只有在第一个参数为NULL(空指针)的情况下,才可能返回EOF,否则,返回成功格式化并赋值的参数个数(>=0).
所以,楼主你的这个循环,将是一个死循环.

while(scanf(%d%d,&a,&b)! while (scanf(%d/%d,&i,&j), while(scanf(%d,&m)!=EOF) while (scanf(%d%d, &m, &n))什么意思? scanf(%d, while(scanf(%d,&n)&&n!=-1)和while(scanf(%d,&n)!=-1)有什么区别》》具体的解释 scanf(%d%d,&a, while( scanf(%d%d%d,&a,&b,&c)!=EOF)是什么意思? C语句while(scanf(%d%d,&x,&y)==2&&(x!=0||y! while(scanf(%d %d %ld,&a,&b,&n),a+b+n),为什么可以这样表达? while(scanf(%d%d,&x,&y)==2&&(x!=0||y!=0)) 比如：while(scanf(%d%d,&a,&b)!=EOF)这句是什么意思? while (scanf(%d%d,&w,&h),在程序中是一个已经定义的数嘛? ACM规则:while(scanf(%s%d,s,&n)!=EOF){//.}while(scanf(%s%d,s,&n)!=EOF){//.}//请问这句话到底是拿来干什么的? 请问在c语言里：scanf（%d,&m）;while(i while(scanf(%s%d,a,&n)==2)什么意思 C语言 While (sanf(%d,scanf（）这个函数本身有值吗 ==2,3呢? #include < stdio.h > main() { int m,n; scanf(%d%d,&m,&n); while (m!=n) { while(m>n) m=m-n;while(m