What does %i mean in C language

%i is a format specifier in C language, used to output signed decimal integers, with the syntax printf("%i", value), where value is the integer to be output.

The meaning of %i in C language

In C, %i is a format specifier that specifies the output format of an integer.

grammar:

 <code>printf("%i", value);</code>

in:

• %i : Format specifier, which specifies the format of the integer to be output.
• value : The integer variable or value to be output.

use:

%i format specifier is used to output signed decimal integers. It converts integers into string form and outputs them to a standard output stream (usually console) based on the specified format criteria.

Example:

 <code class="c">int number = 123; printf("%i", number); // 输出：123</code>

In the above example, %i format specifier is used to output the value of the variable number . The result is the string "123", output to the console.

Notice:

• %i format specifier has the same function as %d format specifier and is used to output signed decimal integers.
• If you want to output an unsigned integer, you can use %u format specifier.
• If you want to specify a specific width or fill character for the output integer, you can use other formatting options.

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