/* 单,双引号区别 */ cout<<"int sizeof is"<<sizeof(int(4))<<endl; cout<<"char sizeof is"<<sizeof('4')<<endl; //汉字在字符串里占两个字节 cout<<"string sizeof is"<<sizeof("东方人1")<<endl; /* 按位异或实现两变量值交换函数 */ int a=2; int b=10; cout<<"ori "<<"a is "<<a<<" "<<"b is "<<b<<endl; a ^= b; b ^= a;a ^= b; cout<<"last "<<"a is "<<a<<" "<<"b is "<<b<<endl; cout<<(0x01<<3+4)<<endl; cout<<(0x100>>4+2)<<endl; cout<<(~7)<<endl; /* */ int i1=1; cout<<i1++ + ++i1<<endl;
未完待续。。。。。