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c语言试卷4(C language test paper 4)
c语言试卷4(C language test paper 4)
A choice (the total of 20 questions, a total of 40 points.)
1. (14) pointer s the length of the string referred to as
Char *s= Name\\Address\n \ \;
A) 19 B) 15 C) 18 D) illegal
2. if there is a program fragment below:
Int, a[12]={0}, *p[3], **pp, i;
For (i=0; i3; i++)
P[i]=a[i*4];
Pp=p;
The wrong reference to the array element is
(A) pp[0][1], a[10]) p[3][1] D) * (* (p+2) +2) B (C)
3. if the relation between a and if is not equal to 0 in parentheses, the expression of the relation can be expressed as
A) a0 B) a
C) a=0 D) a
4. if defined:
Int, a[,]={0,1,2,3,4,5,6,7,8,9], *p=a, i;
0 = I = 9, while the A is not correct on the array element reference
A) a[p-a] B) * (a[i]) C) p[i] D) a[10]
5. the output of the following program is
Main ()
{int, x=10, y=10, I;
For (i=0; x8; y=++i)
Printf (%d, %d, x--, Y);
}
A) 10192, B) 9876, C) 10990, D) 101091
6. the output of the following program is
Void PRTV (int *x)
Printf (%d\n, ++*x);}
(main)
{int a=25;
PRTV (a)}
A) 23, B) 24
C) 25, D) 26
7., the following can correctly string assignment operations statement is
A) char, s[5]={, ABCDE,}, B), char, s[5]={A,B,C,D,E};
C) char *s; s= ABCDEF; D) char *s; scanf (%s, s);
8. set X, y, Z, t, t are int variables, and then execute the following statement, the value of
X=y=z=1; t=++x||++y++z;
(A) indefinite value B) 2 C) 1 D) 0
9. set P1 and P2 are pointer variables pointing to the same int type one-dimensional array. K is a int type variable, and statements that cannot be executed correctly are
A) k=*p1+*p2;
B) p2=k;
C) p1=p2;
D) k=*p1 * (*p2);
10. read the program:
#includestdio.h
#define SUB (X, Y) (X) *Y
(main)
{int, a=3, b=4;
Printf (%d, SUB (a++, b++));
}
The output of the above program is
A) 12, B) 15
C) 16, D) 20
11. sizeof (float) is:
A) int
B) float
C) double
D) uncertain
12. when you execute the following program, enter 3 and 4 from the keyboard, then the output is
(main)
{int, a, B, s;
Scanf (%d%d, a, b);
S=a;
If (ab) s=b;
S=s*s;
Printf (%d\n, s);}
A
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