Given the fragmented definition of the A class.class A{public:A(int x, int y): num1(x), num2(y){}private:int num1, num2;};int main(){A a1(3, 4), a2(5,6);if(a1 < a2)cout << a1;elsecout << a2;return 0;}How to define the A class to make the main function execute successfully?
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Given the fragmented definition of the A class.class A{public:A(int x, int y): num1(x), num2(y){}private:int num1, num2;};int main(){A a(3, 4);double d = a + 5.4;int n = 5 + int(a);}How to work with the A class to make the main function be executed successfully?
下面哪个选项可以判断出字符变量ch(char ch)是否为数字字符 ?
A. 0= B. '0'= C. ch>=0&&ch<=9
D. ch>='0'&&ch<='9'
下面哪个选项可以判断出字符变量ch(char ch)是否为空格 ?
A. ch=' '
B. ch==' '
C. ch=='\n'
D. ch=='0'
如果字符变量c中的字符为大写英文字母,则转化为小写英文字母的语句是()。
A. c+32
B. c+26
C. c=c+26
D. c=c+32