C - Numeric types and their value range

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Introduction

The following table lists C language variable types and also the range of values those types can store.

Type

 Value Range

 printf() Conversion
Character
_Bool
 0 to 1
 %d
char
 -128 to 127
 %c
unsigned char
 0 to 255
 %u
short int
 -32,768 to 32,767
 %d
unsigned short int
 0 to 65,535
 %u
int

 -2,147,483,648 to
2,147,483,647
%d

unsigned int
 0 to 4,294,967,295
 %u
long int

 -2,147,483,648 to
2,147,483,647
%ld

unsigned long int
 0 to 4,294,967,295
 %lu
float
 1.17?10^-38
 to 3.40?10^38
 %f
double
 2.22?10-308 to 1.79?10308
 %f

To store the value -10, you use a short int, int, or long int variable.

You cannot use an unsigned int as the following code demonstrates.

Demo

#include <stdio.h> 

int main() //from   w w  w.ja  v a 2s .c om
{ 
   unsigned int ono; 

   ono = -10; 
   printf("The value of ono is %u.\n",ono); 
   return(0); 
}

Result

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