输入优化:
void read(int &x)
{
int f=1;x=0;char s=getchar();
while(s<'0'||s>'9'){if(s=='-')f=-1;s=getchar();}
while(s>='0'&&s<='9'){x=x*10+s-'0';s=getchar();}
x*=f;
}
用法示例:
int main()
{
int n;
read(n);
}
输入优化(全类型)
template<typename __Type_of_read>
void read(__Type_of_read &x)
{
__Type_of_read f=1;x=0;char s=getchar();
while(s<'0'||s>'9'){if(s=='-')f=-1;s=getchar();}
while(s>='0'&&s<='9'){x=x*10+s-'0';s=getchar();}
x*=f;
}
用法示例:
int main()
{
int a;
short b;
long long c;
read(a),read(b),read(c);
}
输出优化
void print(int x)
{
if(x<0){putchar('-');x=-x;}
if(x>9)print(x/10);
putchar(x%10+'0');
}
用法示例:
int main()
{
int n=14;
print(n);
}
输出优化(全类型)
template<typename __Type_of_print>
void print(__Type_of_print x)
{
if(x<0){putchar('-');x=-x;}
if(x>9)print(x/10);
putchar(x%10+'0');
}
用法示例:
int main()
{
int a=1;
short b=2;
long long c=3;
print(a),print(b),print(c);
}