In which header file does one find isalpha()
a) conio.h
b) stdio.h
c) ctype.h
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Differentiate between declaration and definition.
If a header file is included twice by mistake in the program, will it give any error?
How to declare a pointer to an array of integers?
What is the difference between the functions rand(), random(), srand() and randomize()?
Read the following program carefully and write the output of the program. Explain each line of code according to given numbering. #include <stdio.h> #include <unistd.h> #include <stdlib.h> #include <errno.h> 1……………… int main (void) { pid_t pid; 2………………………… pid = fork(); 3…………………………. if (pid > 0) { int i; 4………………………… for (i = 0; i < 5; i++) { 5………………… …………… printf(" I AM VU : %d\n", i); 6………………… …………… sleep(1); } exit(0); } 7………………… ……… else if (pid == 0) { int j; for (j = 0; j < 5; j++) { 8……………………………… printf(" I have no child: %d\n", j); sleep(1); } _exit(0); } else { 9………………………………fprintf(stderr, "can't fork, error %d\n", errno); 10……………… … ………… exit (EXIT_FAILURE); } }
How new/delete differs from malloc()/free?
What is decltype c++?
3- Write a program to find larger and smaller of the two numbers.
What are the different operators in C++?
What are proxy objects in c++?
1)#include <iostream.h> int main() { int *a, *savea, i; savea = a = (int *) malloc(4 * sizeof(int)); for (i=0; i<4; i++) *a++ = 10 * i; for (i=0; i<4; i++) { printf("%d\n", *savea); savea += sizeof(int); } return 0; } 2)#include <iostream.h> int main() { int *a, *savea, i; savea = a = (int *) malloc(4 * sizeof(int)); for (i=0; i<4; i++) *a++ = 10 * i; for (i=0; i<4; i++) { printf("%d\n", *savea); savea ++; } return 0; } The output of this two programs will be different why?
what is the size of this class class size { public: char data1; double d; int data2; char data3; double data4; short data5; }; please explain the padding for these double variables.