ExamAdept

Are the three declarations char **apple, char *apple[], and char apple[][] same?

A:

True

B:

False

C:

D:

Answer: B

No answer description is available. Let's discuss.

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The following program reports an error on compilation.

#include<stdio.h>
int main()
{
    float i=10, *j;
    void *k;
    k=&i;
    j=k;
    printf("%f\n", *j);
    return 0;
}

A:

True

B:

False

C:

D:

Answer: B

This program will NOT report any error. (Tested in Turbo C under DOS and GCC under Linux)

The output: 10.000000

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Will the program compile?

#include<stdio.h>
int main()
{
    char str[5] = "ExamAdept";
    return 0;
}

A:

True

B:

False

C:

D:

Answer: A

C doesn't do array bounds checking at compile time, hence this compiles.

But, the modern compilers like Turbo C++ detects this as 'Error: Too many initializers'.

GCC would give you a warning.

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Are the expression *ptr++ and ++*ptr are same?

A:

True

B:

False

C:

D:

Answer: B

*ptr++ increments the pointer and not the value, whereas the ++*ptr increments the value being pointed by ptr

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In the following program add a statement in the function fact() such that the factorial gets stored in j.

#include<stdio.h>
void fact(int*);

int main()
{
    int i=5;
    fact(&i);
    printf("%d\n", i);
    return 0;
}
void fact(int *j)
{
    static int s=1;
    if(*j!=0)
    {
        s = s**j;
        *j = *j-1;
        fact(j);
        /* Add a statement here */
    }
}

A:

j=s;

B:

*j=s;

C:

*j=&s;

D:

&j=s;

Answer: B

No answer description is available. Let's discuss.

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Questions for: Pointers