What does lld mean in c language?

In C language, lld represents a 64-bit signed integer, that is, long long decimal. Specifically: the int type is a 32-bit integer, ranging from -2^31 to 2^31-1. The long long type is a 64-bit integer, ranging from -2^63 to 2^63-1. A long long type variable can be declared by adding the ll suffix after the variable name. Commonly used functions include: %lld: formatted input/output. atoi: Convert string to int, use atoll to convert to long long. When using the long long type, you need to pay attention to its 64-bit attributes and use the corresponding functions to handle it.

The meaning of lld in c language

In C language, lld is# Abbreviation of ##long long decimal, used to represent a 64-bit signed integer.

Detailed explanation

In C language, the integer types are

int (32 bits) and long long (64 Bit). The int type can represent integers in the range -2^31 to 2^31-1, while the long long type can represent the range It is an integer from -2^63 to 2^63-1.

When you need to represent an integer beyond the range of

int, you can use the long long type. When declaring a long long variable, you need to add the ll suffix after the variable name, for example:

<code class="c">long long my_number;</code>

is using the

long long type When a variable is used, it can be used as an ordinary integer, but it should be noted that it is a 64-bit integer and needs to be processed using appropriate functions and macros.

The following are some common functions related to the

long long type:

• %lld: used for printfFormat input and output data of long long type in # and scanf.
• atoi(const char *str): Convert a string to type int. If you need to convert to long long type, you need to use the atoll(const char *str) function.
• atoll(const char *str): Convert a string to long long type.

Example

<code class="c">#include <stdio.h>

int main() {
    long long my_number;

    printf("请输入一个数字：");
    scanf("%lld", &my_number);

    printf("您输入的数字是：%lld\n", my_number);

    return 0;
}</code>

In this example, we declare a variable of type

long longmy_number . We then use the scanf function to get a number from the user input and store it in my_number. Finally, we use the printf function to output the value of my_number.

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