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Update io.md
author
yizr-cnyali
<yizr_cnyali@qq.com>
Fri, 1 Mar 2019 06:45:20 +0000
(14:45 +0800)
committer
GitHub
<noreply@github.com>
Fri, 1 Mar 2019 06:45:20 +0000
(14:45 +0800)
重新定义了变量ch以提高速度
docs/misc/io.md
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a/docs/misc/io.md
b/docs/misc/io.md
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--- a/
docs/misc/io.md
+++ b/
docs/misc/io.md
@@
-193,7
+193,8
@@
inline void write(int x) {
```cpp
template <typename T> inline T read(){ //声明 template 类,要求提供输入的类型T,并以此类型定义内联函数 read()
- T sum=0,fl=1,ch=getchar();//将 sum,fl 和 ch 以输入的类型定义
+ T sum=0,fl=1;//将 sum,fl 和 ch 以输入的类型定义
+ int ch=getchar();
for(;!isdigit(ch);ch=getchar()) if(ch=='-') fl=-1;
for(;isdigit(ch);ch=getchar()) sum=(sum<<3)+(sum<<1)+ch-'0';
return sum*fl;