What is the default return type of functions in C++?

What is the type of the first item in the heap? 

What is the output of the following C program?

void main()

{

  int a[0];

  a[0]=10;

  printf("%d",*a);

}

What is the output of the following C program?

#include<stdio.h>

#

int main()

{

  char arr[] = " helloforhello ";

  printf("%d", sizeof(arr));

  getchar();

  return 0;

}

What will be the output of the following program

#include <stdio.h> 

int main() 

{ 

int a, b = 6; 

float c = 7; 

a = c % b; 

printf("%d", a); 

return (0); 

} 

Suppose a C program has a floating constant of 1.414, what's the best way to convert this to a "float" data type?

What are the two types of user-defined conversions in programming?

What is the output of the following C program?

int main()

{

int i=2, j=3, k=1;

swap(i, j);

printf("%d %d", i, j);

return 0;

}

void swap(int a, int b)

{

int temp;

temp = a; a = b; b = temp;

}

Which of the following statement is incorrect?

#include "stdlib.h"

int main()

{

int *pInt;

int **ppInt1;

int **ppInt2;

pInt = (int*)malloc(sizeof(int));

ppInt1 = (int**)malloc(10*sizeof(int*));

ppInt2 = (int**)malloc(10*sizeof(int*));

free(pInt);

free(ppInt1);

free(*ppInt2);

return 0;

}

Choose the correct statement with respect to the above C program.