The following statement is correct ( )
A. The input can be a real constant, such as scanf(”%f”,3.5);
B. Only format control, no input item, can also input correctly, such as scanf(”a=%d,b=5d”);
C. When inputting a real data, the format control part should specify the number of decimal places, such as, scanf ("% 4.2f", &f);
D. When entering data, you must indicate the address of the variable, such as, scanf(”%f”,&f);
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The subscript when defining an array can be an integer constant or an integer expression.
When defining a one-dimensional array, only some elements can be given initial values.
If there is a definition statement: int m[] = {5,4,3,2,1}, i = 4;the error in the following reference to the m array element is ( ).
A. m[--i]
B. m[2*2]
C. m[m[0]]
D. m[m[i]]
The following description of arrays is correct ( ).
A. The size of an array is fixed, but there can be different types of array elements
B. Array size is variable, but all array elements must be of the same type
C. The size of the array is fixed and all array elements must be of the same type
D. The size of an array is variable and can have different types of array elements
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