Which three countries are the top three countries in terms of population?
A.
America
B.
China
C.
India
D.
Russia
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【简答题】若有定义:floatx=1.5;inta=1,b=3,c=2;则正确的switch语句是( )。A. switch(a+b){ case 1: printf("*\n"); case 2+1: printf("**\n");}B. switch((int)x);{ case 1: printf("*\n"); case 2: printf("**\n");}C. switch(x){ c...