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By Jay C.B.

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C++ also allows int declarations to be modified with one of the key words short or long: • short int (or just short) values usually are usually stored in 16 bits (2 bytes) and can range from –215 (= –32768) through 215 – 1 (= 32767). • long int (or just long) values are the same as int values in some versions of C++, while in others they are 64-bit values, ranging from –263 to 263 – 1. indb 43 Other types are the signed char and unsigned char integer types, which are stored in one byte and thus can range from –27 (= –128) through 27 – 1 (= 127); the wide character type wchar_t for storing Unicode characters; complex for complex values; and the void type for an empty set of values.

5 Programming Program instructions for the CPU must be stored in memory. They must be instructions that the machine can execute, and they must be expressed in a form that the machine can understand—that is, they must be written in the machine language for that machine. These instructions consist of two parts: (1) a numeric opcode, which represents a basic machine operation, such as load, multiply, add, and store; and (2) the address of the operand. Like all information stored in memory, these instructions must be represented in a binary form.

Calculate and display the perimeter and the area of a square with a given side. ) 2. Calculate and display the diameter, circumference, and the area of a circle with a given radius. (The diameter is twice the radius. The half-life of polonium is 140 days, which means that because of radioactive decay, the amount of polonium that remains after 140 days is one-half of the original amount. For a given initial amount of polonium and number of days, calculate the amount remaining after that many days.

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