What would be the output of the following program?
int x=40;
main(){
int x=20;
printf("
%d",x);
}
main(){
int x=20;
printf("
%d",x);
}
40
20
Compilation Error
Garbeg Value
Correct Answer :
B. 20
20 Because whenever there is a conflict between a local and a global variable, it is the local variable gets priority.
Related Questions
gets() and puts() are unformatted I/O functions.
True
False
The statement "for (i = 0, j = 2; j <= 10; j++)" is a valid statement in 'C'.
True
False
Only one break can be used in one loop.
True
False
Which of the following is not recommended in a header file?
Type definitions (typedefs)
Class definitions
Function definitions
Template definitions
The output of the following code is:
void main()
{
int a = 0;
while (a<=50) for(;;) if(++a % 50==0) break;
printf("a = %d", a);
}
{
int a = 0;
while (a<=50) for(;;) if(++a % 50==0) break;
printf("a = %d", a);
}
a = 100
a = 50
compilation error
runtime error
fprintf()function can be used to write into console.
True
False
The value of an enumerated datatype can be read using scanf() function.
True
False
Each pass through a loop is called a/an
enumeration
iteration
culmination
pass through
printf() is not a library function.
True
False
The expression (i + j)++ is illegal.
True
False
The printf() function retunes which value when an error occurs?
Positive value
Zero
Negative value
None of these
The output of the following code is:
void main()
{
int a;
int &b = a;
a=100;
printf("b=%d\ta=%d
", b,a);
}
{
int a;
int &b = a;
a=100;
printf("b=%d\ta=%d
", b,a);
}
b=100 a=100
b=100 a=0
b=0 a=100
Error
struct stud
{
int roll;
char name[20];
float marks;
} *p;
What will be the byte size of p?
24
2
26
None
The expression "int i = j = k = 0;" is invalid.
True
False
continue statement is used
to go to the next iteration in a loop
come out of a loop
exit and return to the main function
restarts iterations from beginning of loop
The main() function can be called from any other function.
True
False
------ is the ternary operator
?,-
?,:
++<--
none of the above
In the expression - 'x + y + 3z =20'
x + y' is a keyword
3 and 20 are constants
3z is a constant
y is a variable and z is a constant
Which of the following is not a standard exception built in C++.
std::bad_creat
std::bad_alloc
std::bad_cast
std::bad_typeid
Every if statement can be converted into an equivalent switch statement.
True
False
The expression "b = 3 ^ 2;" will evaluate b = 9.
True
False
What will be output if you will compile and execute the following c code?
#include
int main(){
int i=320;
char *ptr=(char *)&i;
printf("%d",*ptr);
return 0;
}
int main(){
int i=320;
char *ptr=(char *)&i;
printf("%d",*ptr);
return 0;
}
1
64
320
Compiler Error
The contents of a file opened in 'r+' mode cannot be changed.
True
False
The -------------------------- loop executes at least once.
for
while
do-while
while & do-while
The expression 'int j = 6 + 3 % -9;' evaluates to -1.
True
False
Character data types cannot be declared as unsigned.
True
False
The output of the following code is:
main()
{
int a = 5, b = 6;
(a == b? printf("%d", a));
}
{
int a = 5, b = 6;
(a == b? printf("%d", a));
}
0
5
Error
None of the above
All macro substitutions in a program are done before compilation of the program.
True
False
A function to be called must be ended with a----------------
.
?
;
none of the above
Which of the following keyword supports dynamic method resolution?
abstract
Virtual
Dynamic
Typeid