Find the max limit of unsigned int.

[alx2progrmz]

Hi, I'm trying to see what is the max limit of unsigned int. I get the size of int of 4 bytes. But the UINT_MAX is giving me -1.
What am I doing wrong?

#include <stdio.h>
#include <limits.h>

int main(void)
{
    int i = sizeof(int);
    printf("The size of int is %d\n ", i);
    printf("The max limit of unsigned is %d\n", UINT_MAX):
return 0;
}

[Salem]

You're not using the correct format string in printf.

Conversion specifiers
A character that specifies the type of conversion to be applied. The conversion specifiers and their
meanings are:

d, i The int argument is converted to signed decimal notation. The precision, if any, gives the minimum
number of digits that must appear; if the converted value requires fewer digits, it is padded on
the left with zeros. The default precision is 1. When 0 is printed with an explicit precision 0,
the output is empty.

o, u, x, X
The unsigned int argument is converted to unsigned octal (o), unsigned decimal (u), or unsigned
hexadecimal (x and X) notation. The letters abcdef are used for x conversions; the letters ABCDEF
are used for X conversions. The precision, if any, gives the minimum number of digits that must
appear; if the converted value requires fewer digits, it is padded on the left with zeros. The
default precision is 1. When 0 is printed with an explicit precision 0, the output is empty.

[Satya]

So i think he should be writing %u instead of %d. I have not tried it but i hope it is correct. It is strange that always i should have an idea of what my output should be to give the input like %d or %u etc. Why cant i have generic format specifier where i need not guess what my output be? I really don't know i am making sense.

[rstanley]

Hi, I'm trying to see what is the max limit of unsigned int. I get the size of int of 4 bytes. But the UINT_MAX is giving me -1.
What am I doing wrong?

Several things.

1) Turn on and turn up your warning level to the highest setting!

2) See my comments in the corrected code below:

#include <stdio.h>
#include <limits.h>

int main(void)
{
   // sizeof() returns a size_t not int!
   size_t i = sizeof(int);

   // The proper format specifier for a size_t is "%zu".
   printf("The size of int is %zu\n", i);

   // You terminate the line with a colon NOT a semi-colon!
   printf("The max limit of unsigned is %u\n", UINT_MAX);

   return 0;
}