How to operate data format conversion in C language?

In the C language, data format conversion can be achieved through a type-casting operation. Type-casting refers to converting one data type to another.

The specific operation steps are as follows:

1. (Verb) the expression to be converted.
2. Place the expression to be converted in parentheses, and write the target type in front of the parentheses.

For example:

1. Convert an integer to a floating point number:
   int num = 10;
   float float_num = (float)num;
2. Convert a floating-point number to an integer:
   float float_num = 3.14;
   int num = (int)float_num;
3. Convert the character to an integer:
   char chr = ‘A’;
   int num = (int)chr;

It is important to note that type conversion may lead to loss of accuracy or data overflow issues, so it should be used with caution. It is recommended to first perform a validity check when performing type conversion to ensure that the conversion is safe.