C Programming Test 5

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What does the following declaration mean?

int (*ptr)[10];

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Which of the following function is more appropriate for reading in a multi-word string?

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Which  library function used to find the last occurrence of a character in a string ?

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If the two strings are identical, then strcmp() function returns

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In the following code what is ‘P’?

typedef char *charp;

const charp P;

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In the following code, the P2 is Integer Pointer or Integer?

typedef int *ptr;

ptr p1, p2;

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In which stage the following code

#include<stdio.h>

gets replaced by the contents of the file stdio.h

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What will the SWAP macro in the following program be expanded to on preprocessing? will the code compile?

#include<stdio.h>

#define SWAP(a, b, c)(c t; t=a, a=b, b=t)

int main()

{

int x=10, y=20;

SWAP(x, y, int);

printf(“%d %d\n”, x, y);

return 0;

}

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How will you free the allocated memory ?

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If a variable is a pointer to a structure, then which of the following operator is used to access data members of the structure through the pointer variable?

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In which header file is the NULL macro defined?

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Which keyword is used to transfer control from a function back to the calling function ?

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What will happen if in a C program you assign a value to an array element whose subscript exceeds the size of array?

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In C, if you pass an array as an argument to a function, what actually gets passed?

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Which loop is most suitable to first perform the operation and then test the condition?

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What is the output of this C code?

#include <stdio.h>

void main()

{

int i = 2;

do

{

printf(“Hi”);

} while (i < 2)

}

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What is the output of this C code?

#include <stdio.h>

int main()

{

int i = 0, j = 0;

while (i < 5, j < 10)

{

i++;

j++;

}

printf(“%d, %d\n”, i, j);

}

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What is the output of this C code?

#include <stdio.h>

int main()

{

int i = 0;

do {

i++;

printf(“In while loop\n”);

} while (i < 3);

}

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What is the output of this C code?

#include <stdio.h>

int main()

{

for (int i = 0;i < 1; i++)

printf(“In for loop\n”);

}

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What would be the size of the following union declaration?

#include <stdio.h>

union uTemp

{

double a;

int b[10];

char c;

}u;

(Assuming size of double = 8, size of int = 4, size of char = 1)