C Binary Operator Typecasting

When an binary operator occurs with 2 datatypes that are not the same. e.g. uint * int then, the ‘lower’ datatype is promoted to the ‘higher’ datatype before the operation proceeds.

• char and short are converted to int
• float is converted to double
• if any are double then * is converted to double
• if any are long then * is converted to long
• if any are unsigned then * is converted to unsigned
• All float values are converted to double All floating point arithmetic in C is done in double precision
• otherwise, the operands must be int and result is int