14. Integer Literals

Integer literals are numeric constants, or numerals, in our programs.

There are 3 literal notations in C++,

• decimal: 2

• octal: 02

• hexadecimal: 0x2

See also: Hexadecimal Notation

#include <iostream> 
int main() 
{ 
    int x = 15;   // decimal-15
    int y = 015;  // octal-15 (decimal 13)
    int z = 0x15; // hexadecimal-15 (decimal 21)
    return 0;
}