in c language how can I use a long long integer? also printf and scanf?

[ssara]

in c language how can i use long long integer ? also printf scanf ? pls ans my ques

[weaknessforcats]

You would need to research a little.

First define a long long integer and a long integer.

Second, do a sizeof on each of these variables.

Third, if the sizeof each variable is the same you can use
%ld in printf and scanf. If the long long int is larger than the long int, you may need to write your own printf and scanf equivalents. A litte testing here will resolve this.

[Banfa]

long long int was added to C99 and was supported as an extension by some C89/90 compilers well before C99 was introduced.

For compilers supporting long long int:

You can specify a long long int constant by appending LL to the end of your constant 1LL, similary you can use ULL for an unsigned long long int constant.

For printf and scanf you can use the modifier ll in the same way you would have used the l modifier for longs

long long int value = 5LL;
 
printf("%lld\n", value);
 

Generally if a C89/90 compiler supports long long as an extension then it will have support for constants of the type and support in scanf/printf too. However that support may not conform exactly to the C99 standard, i.e. it may use something other than ll as a modifier in printf strings.

You need to check the documentation of the platform/compiler to see what it supports.