There is a definition: int x = 2;, in the following expression, where the value is not 6, it is ( )
A. x*=x+1
B. x++,2*x
C. x*=(1+x)
D. 2*x,x+=2
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If C is defined as a character variable, the correct one in the following statements is ( ).
A. c='97';
B. c="97";
C. c=97;
D. c="a";
An algorithm can only be implemented in one programming language
Program is the concrete realization of algorithm in a programming language
The essence of computational thinking is abstraction and ( ).
A. recursion
B. loop
C. branch
D. automation