Integer may be octal or in hexadecimal : %i Example using printf and scanf function

C Programming Language / Overview of C Language

849

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Program:

#include <stdio.h> 
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; 
} 

Output:

017
15
0xf
15
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Explanation:

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