Two operators cannot be written consecutively. BYTE @. DOUBLE PRECISION. For Fortran or any similar language, you must include the name of a variable (shorthand for a memory address) to the left of the "=" to receive the results of the operations to the right of the "=". The basic arithmetic operations of addition, subtraction, multiplication, division, & exponentiation (raising to the power) are all possible in FORTRAN 77. The operations and their operators are listed in the Table 11.1. DOUBLE COMPLEX @. The operators for an arithmetic expression are any of the following: . REAL. Multiplication * 4. Subtraction - 3. Operands of an arithmetic operation may be a numeric constant, numeric variable or an arithmetic expression in parentheses. Fortran has five LOGICAL operators that can only be used with expressions whose results are logical values (i.e., .TRUE. 4.3 Concept of a computer variable. The same symbols are used for integer (INTEGER), real (REAL, DOUBLE PRECISION REAL) and complex (COMPLEX, DOUBLE PRECISION COMPLEX) arithmetic. Arithmetic Operators Table below shows the arithmetic operators. @ indicates a nonstandard feature. Operations must be defined in a particular sequence as is done in a simple mathematics using BODMAS rule. Fortran provides for all the basic Arithmetic operations. COMPLEX*32 (SPARC only) @. Arithmetic Operators The mathematical symbols that can be used in Fortran and the corresponding mathematical symbol is given in the following table. Division / 5. The five arithmetic operators in FORTRAN are: 1. The arithmetic operations on complex numbers are all represented by the same operators as for the REAL or INTEGER numbers. Addition as well as subtraction in FORTRAN 77 ownership the same familiar symbols + moreover to - . Arithmetic Expressions. Exponentiation ** COMPLEX. Simple Arithmetic Operators Operators in Fortran expressions are about what you would expect from other experiences, except perhaps exponentiation: LOGICAL. 4.6 Integer division. I intend to define a user type that would look like a complex number but would also allow the arithmetic operation of adding two complex numbers. 4.5 Implicit declarations in FORTRAN. Table 3-1 Arithmetic Operators You can use the addition and subtraction operators with one or two operands; in the latter case, specify the operator before the operand; for example, –TOTAL. Arithmetic Operations FORTRAN variables and constants can be processed using operations and functions appropriate to their types. Table: Arithmetic Operators. precedence of arithmetic operators in Fortran 77 are (from highest to lowest): ** {exponentiation} *,/ {multiplication, division} +,- {addition, subtraction} All these operators are calculated left-to-right, except the exponentiation operator **, which has right-to-left precedence. Replacing slow arithmetic operators with faster ones should be reserved for critical code areas. An arithmetic expression evaluates to a single arithmetic value, and its operands have the following types. 4.9 Design and setup of a complete program Use the exponentiation, division, and multiplication operators between exactly two operands. 4.7 Mixed Mode aritmetic. 4.2 Arithmetic operations. REAL*16 (SPARC only) @. The following list shows the Intel Fortran arithmetic operators, from fastest to slowest: Addition (+), Subtraction (-), and Floating-point multiplication (*) Integer multiplication (*) Division (/) Exponentiation (**) Avoid Using EQUIVALENCE Statements 4.4 Declaration statements. But here the rules are slightly different from standard BODMAS. INTEGER. Addition + 2. Fortran 77 : 3. 2. 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