Format specifier

Integer may be octal or in hexadecimal : %I

#include int main() {     int a = 0;     scanf("%i", &a); // input is 017 (octal of 15 )     printf("%d\n", a);     scanf("%i", &a); // input is 0xf (hexadecimal of 15 )     printf("%d\n", a);     return 0; }