2.3题
#include
using namespace std;
int main()
{char c1='a',c2='b',c3='c',c4='101',c5='116';
cout<
}
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2.4题
#include
using namespace std;
int main()
{char c1='C',c2='+',c3='+';
cout<<"I say: ""<
return 0;
}
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2.7题
#include
using namespace std;
int main()
{int i