How do we make a global variable accessible across files?
Explain the extern keyword?
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what is out put of the following code? #include class Base { Base() { cout<<"constructor base"; } ~Base() { cout<<"destructor base"; } } class Derived:public Base { Derived() { cout<<"constructor derived"; } ~Derived() { cout<<"destructor derived"; } } void main() { Base *var=new Derived(); delete var; }
Explain the difference between getch() and getche() in c?
#include<stdio.h> { printf("Hello"); } how compile time affects when we add additional header file <conio.h>.
What is volatile
convert 12345 to 54321 withoutusing strig
what is foreign key in c language?
change to postfix a/(b+c*d-e)
How do you initialize pointer variables?
What is a null string in c?
You are given a string which contains some special characters. You also have set of special characters. You are given other string (call it as pattern string). Your job is to write a program to replace each special characters in given string by pattern string. You are not allowed to create new resulting string. You need to allocate some new memory to given existing string but constraint is you can only allocate memory one time. Allocate memory exactly what you need not more not less.
What is 'makefile' in C langauage? How it be useful? How to write a makefile to a particular program?
Is c high or low level?