C Questions & Answers
>> Tuesday, May 24, 2011
1) int p=5,r;
r=(p--)+(++p)+p+(p++)+(--p);
printf(“%d”,r);
a)27 b)25 c)23 d)none
2) int a=5,b=6,p=9;
if(p=a+b,a++,p=a-b) printf("P");
else printf("R"); This code makes
a)P b)R c)no output d)Complier Error
3) int i=5,j=6;
-i;
printf(“%d %d”,i,-j); This code makes output
a)-5 -6 b)-5 6 c)5 -6 d)5 6
4) float f; int p=5,r=2;
f=p/r The value of f is___________
5) #define x(y) y*y
main()
{ int r,p=5;
r=x(p)/x(p);
printf("%d",r); } This code makes
a)25 b)36 c)49 d)1
6) if(printf(“\0”)) printf("P");
else printf("R"); This code makes
a)P b)R c)no output d)Complier Error
7) int i=-544;
printf("%u",i); This code makes output
a)544 b)-64992 c)64992 d)-544
8) #define int char
#define char float
main()
{ printf("%d %d %d",sizeof(char),sizeof(int),sizeof(float));
} This code makes
a)Complier Error b)1 2 4 c)1 1 1 d)4 4 4
9) (i) for(i=1;i>0;i++) {}
(ii) for(i=1;;i++) {}
a)(i) finite loop (ii) infinite loop
b)(i) infinite loop (ii) infinite loop
c)(i) finite loop (ii) finite loop
d)(i) infinite loop (ii) Complier Error
10) union u
{ struct s
{ int i;
float f; }s1;
Char c[5]; }u1;
The total no. of bytes require for the ‘union u1’ is______bytes
11) int r,p; char c=’5’,d[3]=”5”;
r=c-‘0’; p=d-‘0’;
if(r==p) printf(“P”);
else printf(“R”); This code makes
a)R b)P c)Cann’t define d)Compiler Error
12) float *f,e=4.56;
f=&e; printf(“%d”,sizeof(f)); The output is _________
13) int p=44;
do while(p<44) printf("P");
while(p>44); printf("R"): This code makes
a)PR b)PPP.... c)R d)Compiler Error
14) int k=1,j=-1,l=2,p,r;
p=--k||++j&&l--; r=++j&&++p||++k;
printf("%d %d %d %d %d",j,k,l,p,r);
The output of above code is________________
15) int p=56,r;
r=~p;
printf(“%d”,r); This code makes
a)-56 b)-55 c)-57 d)-44
16) for(i=0;i<5;printf(“R”),i++);
printf(“P”); This code makes
a)RRRRRP b)RPRPRPRPRP c)PPPPPR d)Compiler Error
17) i=5;
j=++i++;
printf(“%d %d”,i,j); This code makes
a)6 6 b)7 6 c)7 7 d)Compiler Error
18) (1/0)?((0/0)?printf("P"):printf("R")):printf("S"); This code makes
a)P b)R c)S d)Compiler Error
19) main()
{
printf(“%d”,printf(“%d\t%d”,printf(“xyz\rabc\t”),44));
} This code makes output
a)xyz\rabc\t 10 444 b)xyzabc 6 444 c)abc 8 444 d)xyz 8 444
20) int p,r;
P=4,456;
r=5,544+p;
printf(“d% %d”,p,r); This code makes
a)4,456 5,000 b)4,456 10,000 c)4 5 d)Compiler Error;
21) #define x 50
#define y x+10
main()
{
int p,r;
p=y*2;
r=44/y;
printf(“%d%d”,p,r);
} The values of p & r are ____________
22) 1. #define p 66
2. main()
3. { int r=2;
4. p=p+r;
5. printf(“%c”,p); } This code makes
a)Compiler Error at line 4 b)Compiler Error at line 5
c)Compiler Error at line 3 d)Output is D
23) double far *f, near *n;
printf(“%d %d”,sizeof(f),sizeof(n)); This code makes output
a)2 2 b)4 2 c)8 4 d)4 4
24) for(p=8;p>0;printf(“%d ”,p--))
{
switch(p)
{
case 5:
case 6:
p=0;
break;
}
} This code makes output
a)8 7 0 0 4 3 2 1 b)8 7 6 5 c)8 7 6 d)8 7 0
25) main() s() f()
{ { {
void (*f)(),s(); printf(“sss”); printf(“fff”);
f=s; } }
f();
} This code makes
a)sss b)fff c)a or b d)Complier Error
26) int p[10]={5,6},r;
r=p[p[p[p[1]]]];
printf(“%d”,r); This code makes
a)6 b)garbage value c)0 d) Compiler Error
27) main()
{
int p=0;
while(p<=50)
for(;;)
if(++p%50==0)
break;
printf(“%d”,p);
} This code makes
a)50 b)100 c)150 d)Compiler Error
28) float *p,a[]={5.4,5.6,5.8};
p=&a;
p++;
printf(“%f”,*p); This code makes output
a)5.5 b)6.4 c)5.7 d)5.6
29) main() g(int l)
{ {
int i=5,k=5,j; return(--l);
g(); }
j=g(i++)+(k--)+g(k);
printf(“%d”,j);
} This code makes output
a)15 b)14 c)13 d)12
30) int i=4,j=5,k=6;
j=(i+k,k++,j+--k),(k-i,--i+j);
printf("%d %d %d",i,j,k); The output of this code is _____________
1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 |
b | b | c | 2.0 | a | b | c | d | a | 6 | b | 2 | c | 1 0 2 1 1 | c |
16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 |
a | d | b | c | c | 70 10 | a | b | d | a | c | b | d | c | 3 11 6 |
