题目内容

在下列语句中存在错误的是

A. int a,b;scanf("a=%d,b=%d",&a,&b);printf("a=%d,b=%d",a,b);
B. int a,b;scanf("%d %f",&a,&b);
C. int a,b;scanf("%d %d",a,b);
D. int a,b;scanf("%d,%d",&a,&b);printf("a=%2d,b=%2d",a,b);

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A. 'a'<=c1<='z'
B. (c1>=a)&&(c1<=z)
C. ('a'>=c1)||('z'<=c1)
D. (c1>='a')&&(c1<='z')

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B. 3,2
C. 4,3
D. 2,--1

A. (x>=y)&&(y>=z),y=z,y!=z
B. (x>=y)||(y>=z),y==z,y!=z
C. (x>=y)&&(y>=z),y==z,y!=z
D. (x>=y)||(y>=z),y=z,y!=z

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B. T
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