C Programming Exam
Essay by anitharavi • June 18, 2015 • Exam • 7,685 Words (31 Pages) • 889 Views
Essay Preview: C Programming Exam
(1)
void main(){
char i;
clrscr();
for(i=120;i<=128;i++){
printf("%d ",i);
}
getch();
}
Output: Infinite loop
(2)
void main(){
int i;
clrscr();
for(i=0,i++,i<=5;i++,i<=2;i=0,i<=5,i+=3){
printf("%d ",i);
}
getch();
}
Output: 2
(3)
void main(){
int i=1;
clrscr();
for(;;){
printf("%d ",i);
}
getch();
}
Output: Infinite loop
(4)
void main(){
int i=2;
clrscr();
for(i=0;i<=3;i++){
static int i;
i=i+8;
}
printf("%d",i);
getch();
}
Output: 4
(5)
extern int j;
void main(){
int i=0;
clrscr();
for(i=0;i<=2;i+=1){
int j=5;
printf("%d ",j);
j++;
}
getch();
}
int j=25;
Output: 5 5 5
(6)
extern int j;
void main(){
int i=0;
clrscr();
for(i=0;i<=2;i+=1){
int j=5;
printf("%d ",j);
j++;
}
getch();
}
int j=25;
1.
What will be output when you will execute following c code?
#include
void main(){
printf("%d\t",sizeof(6.5));
printf("%d\t",sizeof(90000));
printf("%d",sizeof('A'));
}
Choose all that apply:
(A) | 4 2 1 | [pic 1] |
(B) | 8 2 1 | [pic 2] |
(C) | 4 4 1 | [pic 3] |
(D) | 8 4 1 | [pic 4] |
(E) | 8 4 2 | [pic 5] |
Explanation:
By default data type of numeric constants is:
6.5 : double
90000: long int
‘A’: char
In C size of data type varies from compiler to compiler.
In TURBO C 3.0 (16 bit compilers) size of:
double is 8 byte
Long int is 4 byte
Character constant is 2 byte (size of char data type is one byte)
In TURBO C 4.5 or Linux GCC compilers (32 bit compilers) size of:
double is 8 byte
long int is 8 byte
Character constant is 2 byte
2.
Consider on following declaring of enum.
(i) enum cricket {Gambhir,Smith,Sehwag}c;
(ii) enum cricket {Gambhir,Smith,Sehwag};
(iii) enum {Gambhir,Smith=-5,Sehwag}c;
(iv) enum c {Gambhir,Smith,Sehwag};
Choose correct one:
(A) | Only (i) is correct declaration | [pic 6] |
(B) | Only (i) and (ii) is correct declaration | [pic 7] |
(C) | Only (i) and (iii) are correct declaration | [pic 8] |
(D) | Only (i),(ii) and are correct declaration | [pic 9] |
(E) | All four are correct declaration | [pic 10] |
Explanation:
Syntax of enum data type is:
enum [
…
} [
Note:
[] : Represents optional .
<>: Represents any valid c identifier
3.
What will be output when you will execute following c code?
#include
void main(){
signed x;
unsigned y;
x = 10 +- 10u + 10u +- 10;
y = x;
if(x==y)
printf("%d %d",x,y);
else if(x!=y)
printf("%u %u",x,y);
}
Choose all that apply:
(A) | 0 0 | [pic 11] |
(B) | 65536 -10 | [pic 12] |
(C) | 0 65536 | [pic 13] |
(D) | 65536 0 | [pic 14] |
(E) | Compilation error | [pic 15] |
...
...