Parameter passing

What will be the output of the following C code?
#include <stdio.h>
void main()
{
m();
printf("%d", x);
}
int x;
void m()
{
x = 4;
}
1. 4
2. compile time error
3. 0
4. undefined
What will be the output of the following C code?

#include <stdio.h>
int x;
void main()
{
printf("%d", x);
}
1. Junk value
2. Run time error
3. 0
4. undefined
What will be the output of the following C code?

#include <stdio.h>
int x = 5;
void main()
{
int x = 3;
printf("%d", x);
{
x = 4;
}
printf("%d", x);
}
1. Run time error
2. 3 3
3. 3 5
4. 3 4
A function that uses variable types is called
1. keywords
2. Variable function
3. userdefined function
4. library function
What will be the output of the following C code?
#include <stdio.h>
int x = 5;
void main()
{
int x = 3;
printf("%d", x);
{
int x = 4;
}
printf("%d", x);
}
1. 3 3
2. 3 4
3. 3 5
4. Run time error
Functions in C are always _____
1. Internal
2. External
3. Both Internal and External
4. External and Internal are not valid term for functions
Global variables are _____
1. Internal
2. External
3. Both internal and external
4. None of the mentioned
Which of the following is an external variable in the following C code?
#include <stdio.h>
int func (int a)
{
int b;
return b;
}
int main()
{
int c;
func (c);
}
int d;
1. a
2. b
3. c
4. d
What will be the output of the following C code?

#include <stdio.h>
int main()
{
printf("%d", d++);
}
int d = 10;
1. 9
2. 10
3. 11
4. Compile time error
What will be the output of the following C code?

#include <stdio.h>
double var = 8;
int main()
{
int var = 5;
printf("%d", var);
}
1. 5
2. 8
3. Compile time error due to wrong format identifier for double
4. Compile time error due to redeclaration of variable with same name
What will be the output of the following C code?
#include <stdio.h>
double i;
int main()
{
printf("%g\n",i);
return 0;
}
1. 0
2. 0.000000
3. Garbage value
4. Depends on the compiler
Which part of the program address space is p stored in the following C code?

#include <stdio.h>
int *p = NULL;
int main()
{
int i = 0;
p = &i;
return 0;
}
1. Code/text segment
2. Data segment
3. Bss segment
4. Stack
Which part of the program address space is p stored in the following C code?

#include <stdio.h>
int *p;
int main()
{
int i = 0;
p = &i;
return 0;
}
1. Code/text segment
2. Data segment
3. Bss segment
4. Stack
Can variable i be accessed by functions in another source file?
#include <stdio.h>
int i;
int main()
{
printf("%d\n", i);
}
1. Yes
2. No
3. Only if static keyword is used
4. Depends on the type of the variable
Property of the external variable to be accessed by any source file is called by the C90 standard as __________
1. external linkage
2. external scope
3. global scope
4. global linkage
What will be the output of the following C code?

#include <stdio.h>
int *i;
int main()
{
if (i == NULL)
printf("true\n");
return 0;
}
1. true
2. true only if NULL value is 0
3. Compile time error
4. Nothing
What will be the output of the following C code?

#include <stdio.h>
int *i;
int main()
{
if (i == 0)
printf("true\n");
return 0;
}
1. true
2. true only if NULL value is 0
3. Compile time error
4. Nothing
What will be the output of the following C code?

#include <stdio.h>
static int x = 5;
void main()
{
x = 9;
{
int x = 4;
}
printf("%d", x);
}
1. 9
2. 4
3. 5
4. 0

Parameter passing

Quiz