Write a program to test the difference between %d and %i conversion

Void test (char * s)

{

int i, d;

sscanf (s, "%i", &i);

printf ("%s converts to %i using %%i/n", s, i);

sscanf (s, "%d", &d);

printf ("%s converts to %d using %%d/n", s, d);

}

int main ()

{

test ("123");

test ("0x123");

return 0;

}

outputs:

123 converts to 123 using %i

123 converts to 123 using %d

0x123 converts to 291 using %i

0x123 converts to 0 using %d

As you can see, %i is capable of parsing hexadecimal, whereas %d is not. For printf they're the same.