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In this tutorial, we will learn about the arguments used with printf() function for a long datatype.
Submitted by
Shubh Pachori
, on July 10, 2022
In C programming language there are many
long
datatypes like
signed long int
or
long int
,
unsigned long int
,
signed long long int
or
long long int
,
unsigned long long int
, and
long double
as well. These data types are used to store much bigger values than in normal data types.
Brief description of long datatypes
-
signed long int or long int:
The size of these datatypes is 4 bytes and its range is
(-2
31
)
to
(2
31
-1).
The format specifier is used for long int are %ld and %li.
-
unsigned long int:
The size of these datatypes is also 4 bytes and its range is
0
to
(2
32
-1).
The format specifier is used for unsigned long int is %lu.
-
signed long long int or long long int:
The size of these datatypes is 8 bytes. The format specifier is used for long long int are %lld and %lli.
-
unsigned long long int:
The size of these datatypes is 8 bytes. The format specifier is used for unsigned long long int is %llu.
-
long double:
The size of these datatypes is 10 bytes. The format specifier is used for unsigned long double is %Lf.
The argument for printf() function that formats a long variable
depends on the datatypes which you're referring to like
long int
,
long long int
, or
long double
. There is a different argument used in every different datatype.
Example: C language code for understanding of the arguments in printf() function
#include <stdio.h>
int main()
long int li; //declaring a long int variable
unsigned long int uli; //declaring an unsigned long int variable
long long int lli; //declaring a long long int variable
unsigned long long int ulli; //declaring an unsigned long long int variable
long double ld; //declaring a long double variable
printf("Enter long int: ");
scanf("%ld", &li); //argument in printf for long int(%ld)
printf("Enter unsigned Long Int: ");
scanf("%lu", &uli); //argument in printf for unsigned long int(%lu)
printf("Enter long long int: ");
scanf("%lld", &lli); //argument in printf for long long int(%lld)
printf("Enter unsigned long long int: ");
scanf("%llu", &ulli); //argument in printf for unsigned long long int(%llu)
printf("Enter long double: ");
scanf("%Lf", &ld); //argument in printf for long double(%Lf)
printf("\nlong int: %ld", li);
printf("\nunsigned long int: %lu", uli);
printf("\nLong long int: %lld", lli);
printf("\nunsigned long long int: %llu", ulli);
printf("\nlong double: %Lf", ld);
return 0;
Output:
Enter long int: 12345
Enter unsigned Long Int: 1234567
Enter long long int: 123456789
Enter unsigned long long int: 1234567890987
Enter long double: 123456.678
long int: 12345
unsigned long int: 1234567
Long long int: 123456789
unsigned long long int: 1234567890987
long double: 123456.678000
