题目内容

There is a definition：int x=2; In the following expression whose value is not 6 is ( )

A. x=x+1
B. x++,2x
C. x=(1+x)
D. 2x,x+=2

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The following C language expression that does not correctly represent the algebraic expression 2ab/(cd) is ( )

A. 2*a*b/c/d
B. a*b/c/d*2
C. a/c/d*b*2
D. 2*a*b/c*d

The following correct expression is ( )

A. x=y*5=x+z
B. int(15.8%5)
C. x=y+z+5,++y
D. x=25%5.0

There is a definition：int k=0;Of the four expressions for the following options, the value that differs from the other three expressions is ( )

A. k++
B. k+=1
C. ++k
D. k+1

The output of the following program is ______ void main() { char s1,s2,m; s1=s2=(char)malloc(sizeof(char)); s1=15; s2=20; m=s1+*s2; printf("%d\n",m); }