C compilers s Options s flags s C function I/O system s Fortran compiler g data statement p halfword integers s logical quantities s lower case s non-character variables s external names s ~external variable record length s source file s scratch file s type integer s type statement s upper case letters s double precision s double complex S sequential I/O s canseek S common block p complex S do loop p entry point s equivalence S external S fseek S B function s goto S CW integer S CW integer\(**2 S intrinsic function s len S print statement p read S real S return S static S subroutine S B undefined S write statement p Portable Fortran 77 Compiler g Usage s Documentation Conventions s Implementation Strategy s Language Extensions s Implicit Undefined statement s Recursion s Automatic Storage s Source Input Format s Include Statement s Binary Initialization Constants s Character String s One-Trip \f(CWdo\fP Loops r Commas in Formatted Input s Short Integers s Violations Of The Standard s \f(CWt\fR and \f(CWtl\fR Formats y Inter-Procedure Interface s Procedure Names s Data Representations s Argument Lists s File Formats s Structure of Fortran Files s Portability Considerations s Pre-Connected Files and File Positions s Differences Between Fortran 66 and Fortran 77 s Features Deleted from Fortran 66 s Hollerith s Extended Range s Program Form s Blank Lines s Program and Block Data Statements s \f(CWentry\fP statement p Declarations s \f(CWcharacter\fP Data Type p \f(CWimplicit\fP statement p \f(CWparamater\fP statement p Array Declarations s \f(CWsave\fP statement p \f(CWintrinsic\fP statement p \f(CWinclude\fR Statement p Expressions s Concatenation s Substrings s Exponentiation s Relaxation of Restrictions s Executable Statements s Block if r Alternate Return s Input/Output s Format Variables s \f(CWend=\fP, \f(CWerr=\fP, and \f(CWiostat=\fP Clauses Y Formatted I/O s Character Constants s Positional Editing Codes s Colon s Optional Plus Signs s Blanks on Input s Unrepresentable Values s Iw.m S Floating Point s \f(CWa\fP Format p Standard Units s List-Directed Formatting s Direct I/O s Internal Files s File Control Statements s open S close S inquire S