Fortran对大小写不区分, 结构如下: program name declarations statements stop (可有可无) End Col. 1 : Blank, or a "c" or "*" for comments Col. 1-5 : Statement label (optional) Col. 6 : Continuation of previous line (optional) Col. 7-72 : Statements Col. 73-80: Sequence number (o...
DATA TheDATAstatement initializes variables, substrings, arrays, and array elements. DATAnlist/clist/[[,]nlist/clist/]... Parameter Description nlist List of variables, arrays, array elements, substrings, and impliedDOlists separated by commas...
A block data subprogram can contain as many labeled common blocks and data initializations as desired.The BLOCK DATA statement must be the first statement in a block data subprogram. The only other statements that can appear in a block data subprogram are:...
type declaration statements! executable statementsendprogramprogram_name Fortran中的一个简单程序 让我们编写一个程序,添加两个数字并打印结果 - programaddNumbers! This simple program adds two numbersimplicitnone! Type declarationsreal:: a, b, result! Executable statementsa =12.0b =15.0result = a + bpr...
EXTERNAL Statement During compilation and linking, if one of the modules containing a procedure is omitted, the linker will almost certainly return an error but this will not happen if it's theBLOCK DATAsubprogram that's missing. To avoid this possibility, the name of theBLOCK DATAsubprogram un...
程序单位中语句和注释行的顺序程序单位中语句和注释行的顺序注释行PROGRAM、FUNCTION,SUBROUTINE或BLOCKDATA语句END语句ENTRY语句和FORMAT语句PARAMETER语句DATA语句IMPLICIT语句其它说明语句语句函数语句可执行语句在上表中,水平实线是语句允许出 5、现的前后界线,实线是不可跨越的,否则,被判定为语句顺序错(Statement out of...
[statement declarations] [contains [subroutine and function definitions] ] end module [name] 2. module的性质 最重要的是定义全局变量的性质,用的最多 模块中声明的变量在使用模块的任何程序或子程序中成为全局变量 全局变量会在程序执行中永久记住上一次函数调用时所被设置的数值 ...
Welcome to theFORTRAN 77 Reference. Although quite elderly as programming languages go, FORTRAN remains one of the pre-eminent 'number-crunching' computer programming languages. The links below describe some of the features of the FORTRAN 77 incarnation of this language. ...
4.7ENDStatement...5Constants,Variables,andArrays 5.1DataTypes... 5.2Constants... 5.3SpecifyingDataType... 5.4NamedConstants... 5.5Variables...
SQL数据库的主要原则是模式（schema）: 一种数据库被如何组织的正式声明. 模式被反映在你用来创建你的数据库的SQL语句中. 你可能会发现创建一个同伴类很有用，它被称作（contract）协议类, 它用一种系统和自文档化的方式明确指定了你的模式的布局.