Difference between “int main()” and “int main(void)” in C/C++?

Consider the following two definitions of main(). int main() {    /*  */    return 0; } and int main...

Difference between float and double in C/C++

For representing floating point numbers, we use float, double and long double. What’s the difference ? double has 2x more precision then float. ...

What is the difference between printf, sprintf and fprintf?

printf: printf function is used to print character stream of data on stdout console. Syntax : int printf(const char* str, ...); Example : // simple prin...

Difference between %d and %i format specifier in C language

A format specifier is a sequence formed by an initial percentage sign (%) indicates a format specifier, which is used to specify the type and format of the data to be...

Find the minimum distance between two numbers

Given an unsorted array arr[] and two numbers x and y, find the minimum distance between x and y in arr[]. The array might also contain duplicates. You may assume tha...

Difference between getc(), getchar(), getch() and getche()

All of these functions read a character from input and return an integer value. The integer is returned to accommodate a special value used to indicate failure. Th...

Difference between ++*p, *p++ and *++p

Predict the output of following C programs. // PROGRAM 1 #include <stdio.h> int main(void) {     int arr[] = {10, 20};  &...

Difference between strlen() and sizeof() for string in C

sizeof() Sizeof operator is a compile time unary operator which can be used to compute the size of its operand. The result of sizeof is of unsigned integral type ...

Diffference between #define and const in C?

#define is a preprocessor directive. Things defined by #define are replaced by the preprocessor before compilation begins. const variables are actual variables like...

What’s difference between header files “stdio.h” and “stdlib.h” ?

These are two important header files used in C programming. While “<stdio.h>” is header file for Standard Input Output, “<stdlib.h>&#...