Type conversion performed automatically by the compiler without programmer intervention is known as implicit or type promotion. Type conversion performed explicitly by the programmer by specifying the data type is known as explicit type conversion or type casting, which is done in code using the form (data_type)expression. The key difference is that type casting allows conversion between types specified by the programmer while type conversion is handled by the compiler during compilation.

1. Type Conversion:
When the type conversion is performed automatically by the compiler without
programmer’s intervention, such type of conversion is known as implicit type
conversion or type promotion.
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7. Type Casting:
The type conversion performed by the programmer by posing the data type
of the expression of specific type is known as explicit type conversion. The
explicit type conversion is also known as type casting.
Type casting in c is done in the following form:
(data_type)expression;
where, data_type is any valid c data type, and expression may be constant,
variable or expression.
1. The basic difference which distinguishes type casting from type conversion
is that type casting is conversion of one type to another, done by the
programmer. On the other hand, the type conversion is conversion of one
type to another, done by the compiler while compiling.
2. The conversion of one type to another in type casting requires the casting
operator “( )” while, the conversion of one data type to another in type
conversion do not require any operator.

8. 1.In type conversion:
In type casting: