C Functions Test - 2

1. What will be the output of the following C code?

    #include <stdio.h>
    int *m()
    {
        int *p = 5;
        return p;
    }
    void main()
    {
        int *k = m();
        printf("%d", k);
    }

Junk value

Error

2. What will be the output of the following C code?

   #include <stdio.h>
    int m()
    {
        printf("hello");
    }
    void main()
    {
        int k = m();
        printf("%d", k);
    }

Nothing

hello5

Error

Junk value

3. What will be the output of the following C code having void return-type function?

    #include <stdio.h>
    void foo()
    {
        return 1;
    }
    void main()
    {
        int x = 0;
        x = foo();
        printf("%d", x);
    }

Compile time error

Runtime error

4. What is the return-type of the function sqrt()?

depends on the data type of the parameter

int

float

double

5. What is the problem in the following C declarations?

   int func(int);
   double func(int);
   int func(float);

A function with same name cannot have different return types

A function with same name cannot have different signatures

A function with same name cannot have different number of parameters

All of the mentioned

6. What will be the output of the following C code?

    #include 
    int *m();
    void main()
    {
        int *k = m();
        printf("hello ");
        printf("%d", k[0]);
    }
    int *m()
    {
        int a[2] = {5, 8};
        return a;
    }

hello followed by garbage value

Compilation error

hello 5

hello 5 8

7. What will be the data type returned for the following C function?

    #include <stdio.h>
    int func()
    {
        return (double)(char)5.0;
    }

double

int

multiple type-casting in return is illegal

char

8. Which of the following function declaration is illegal?

   double func();
   int main(){}
   double func(){}

   int main()
   {
       double func();
   }
   double func(){//statements}

   double func(){};
   int main(){}

None of the mentioned