1．填空
1、            are used to document a program and improve its readability.
2、What, if anything, prints when each of the following C statements is performed? If nothing prints, then answer “nothing.”
Assume x = 2 and y = 3.
a）printf( "%d = %d", x + y, y + x );           
b) z = x + y;               
A location in the computer's memory that may contain different values at various times throughout the execution of a program is called a         
Write a single pseudocode statement that indicates：Assign the sum of variables x, y, and z to variable p.           
The solution to any problem involves performing a series of actions in a specific     
A synonym for procedure is           
7、State which values of the control variable x are printed by each of the following for statements:
a）for ( x = 2; x <= 13; x += 2 )
  printf( "%d\n", x );             
b) for ( x = 3; x <= 15; x += 3 )
  printf( "%d\n", x );               
8、Show the value of x after each of the following statements is performed:x=7.5
a) x = fabs( x);             
b) x = floor( x);               
C stores lists of values in       
10、 The contents of a particular element of an array is called the        of that element.
11、The name of the element in row 3 and column 5 of array d is            .
12、Write statements to accomplish each of the following:
a) Display the value of the seventh element of character array f.                       
b) Copy array a into the first portion of array b. Assume double a[ 11 ], b[ 34 ];
                           
13、Consider a 2-by-5 integer array t.
a) Write a definition for t.           
b) How many elements does t have?             
Write for statements that print the following sequences of values:
1, 2, 3, 4, 5, 6, 7                   
Write statements that assign random integers to the variable n in the following ranges:
–3 ≤  n ≤  11                                 
选择
variable used in lambda1. The function inputs values from the keyboard is (    ).
A.scanf            B.printf            C.while            D.main
2.Input three integer values from the keyboard and place these values in integer variables a, b and c.
A.scanf(“%d%d%d”, a, b, c )            B.printf(“%d%d%d”, a, b, c)
C.scanf(“%d%d%d”, &a, &b, &c )        C.printf( “%d%d%d”, &a, &b, &c )
3.Which contents will display on the screen while you write the statement printf("a = 5;"); 
A. printf("a = 5;")            B.5            C.a = 5        D.a = 5 ;
4. Which one is invalid variable names?
A.3g                B.while            C.cut.out            D.EATING
5.Which, if any, of the following C statements contain variables involved in destructive read-in?
a) scanf( "%d%d%d%d%d", &b, &c, &d, &e, &f );
b) p = i + j + k + 7;
c) printf( "Destructive read-in" ); 
d) printf( "a = 5" ); 
6.Given the equation y = ax3 + 7, which of the following, if any, are correct C statements for this equation?
A) y = a * x * x * ( x + 7 );
B) y = ( a * x ) * x * ( x + 7 );
C) y = ( a * x ) * x * x + 7;
D) y = a * x * ( x * x + 7 );
7. Show the value of equator x = ( 3 * 9 * ( 3 + ( 9 * 3 / ( 3 ) ) ) ); after C statement is performed.
A.324            B.338        C.108            D.124
The item written inside a decision symbol is called a (  )
A.flowline        B.condition        C. algorithm        D. assignment
Which C statement is true?
printf(“%d\n”, x );                B. While ( counter <<= 100 );       
C.for ( x = =3; x <= 15; x += 3 )        D. counter ++2;
Which values of the control variable x are printed?
for ( x = 5; x <= 22; x += 7 )
    printf( "%d\n", x );
A.5,    9,12            B.6,9,12            C.6,12,19            D.5,12,19
Write for statements that print the following sequences of values:1, 2, 3, 4, 5, 6, 7
for ( i = 1; i <= 7; i++ )printf( “%d ”, i );       
B.for ( i = 0; i <= 7; i++ )printf( “%d ”, i );       
C.for ( i = 1; i <  7; i++ )printf( “%d ”, i );           
D.for ( i = 0; i <  7; i++ )printf( “%d ”, i );   
How many @ will be printed by follow statement?
    x=3;y=3;
for ( i = 0; i <= y; i++ ) {
          for ( j = 1; j < x; j++ ) {printf( "@" ); } }
A.6                B.4                C.9                D.8
Which statement is used to shift to another line after print a string.
printf( “The product of %d and %d is %d”\n, x, y, z );       
B.  printf( “The product of %d and %d is %d\n”, x, y, z );       
C.    printf( “The product of %d and %d is %d\n”, &x, &y, &z );       
D.  printf( “The product of %d and %d is %d”\n, &x, &y, &z );   
14.The function used to display information on the screen is (    )

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