JPH02118853A - Program displaying system - Google Patents

Abstract

PURPOSE:To judge at which position in a program the statement is designated and displayed by a parameter by displaying together with the statement to constitute a hierarchy when the program of a hierarchy construction is displayed on the picture. CONSTITUTION:At the new preparation process of a program, a program statement is successively inputted from a keyboard 16, the identification name of the program is given and stored into the memory of a floppy disk 12 or a disk 13. When a program stored already in the memory is corrected, the program identification name is designated from the keyboard 16, the program is called out, the corrected object part is selected with a line symbol assigned to respective statements as a parameter and displayed on a picture 15. For the correction, while the picture is referred to, a correction statement is inputted from the keyboard 16, if necessary, the contents of the program are outputted to a hard copy 14 and the program after the correction is stored into the disk 12 or 13.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a program display method, and more particularly to a program display method for displaying program components and key statements.

(Prior Art) In the initial system, program statements punched on a punched card were read by a card reader and stored in a storage device for registering and modifying a new program during the program development process. The contents of the 10 grams stored in the storage device are usually output to a printer to create a program list, and this list is referred to when checking the contents of the program for correction work or the like.

With the development of terminal devices with CR7 screens, it has become possible to input program statements from the terminal device in a conversational manner with the computer.

Currently, programs are generally developed using this method. When checking the contents of a program in development work using this method, the contents are displayed on the screen by indicating the 10-gram identification name and display range from a terminal device, and the contents are referred to.

There is a history of improvement in the method of creating programs, and the early t
Starting from the creation method using F language or assembler language, highly productive languages called high-level languages are now in use.

Even among high-level languages, language forms that have a hierarchical structure in which statements are divided into stages and units of processing are visually easy to see are contradictory, in order to improve program productivity and maintainability.

(Problem to be Solved by the Invention) The above hierarchy structure may be configured in multiple layers depending on the difficulty level of the program, and the number of statements that can be displayed on the screen of a terminal device during program development work. is constrained within the number of lines determined by the device specifications. Therefore, when displaying a deep part of the hierarchy, it may become unclear to which position in the program those statements belong. FIG. 3 shows an example in which a hierarchically structured program 31 is displayed on a screen 32 using a conventional method.

(Means for Solving the Problems) The present invention solves the problems when displaying a hierarchically structured program on the screen using the conventional method, and displays the keywords that make up the hierarchy together with the program statements on the screen. This makes it easier to see which paragraph in the program the statement being displayed is located in.

The program display method according to the present invention includes a search means for searching for constituent elements of a hierarchically structured program, a specifying means for specifying a key statement to be displayed, and a display means for displaying the constituent elements and statements.

(Example) Next, the present invention will be explained with reference to the drawings.

FIG. 1 is a block diagram showing an embodiment of a program display method according to the present invention.

In the process of creating a new program, program statements are input sequentially from the keyboard 16, and the program is given an identification name and stored in the storage device of the floppy disk 12 or disk 13.

When modifying a program already stored in the storage device, call the program by specifying the program identification name from the keyboard 16, select the part to be modified using the line symbol assigned to each statement as a parameter, and display the screen. For one correction to be displayed in 15, input the correction statement from the keyboard 16 while looking at the screen.
If necessary, output the contents of the program to the hard copy 14 and save the modified program to the floppy disk 12.
Or store it on the disk 13.

An example of the display method on the screen is shown in FIG.

FIG. 2 is an example of displaying the statements after the line symbol "2200" assigned to the statement in the hierarchical program 21 on the screen 22.
The screen 22 is divided into an area 1ti23 for displaying a hierarchical structure and an area 24 for displaying statements specified by parameters.

In the area 24, there is a line symbol “2” specified by the parameter.
200” and subsequent statements are displayed.

Further, in the area 23, statements that are keys forming a hierarchy including the statements displayed in the area 24 are displayed.

(Effects of the Invention) As explained above, the present invention, when displaying a hierarchically structured program on the screen, displays the statements that make up the hierarchy together, so that the displayed statement specified by the parameter can be displayed in the program. This has the effect of making it easy to determine which position it belongs to.

[Brief explanation of the drawing]

FIG. 1 is a configuration block diagram showing an embodiment of the program display method according to the present invention, FIG. 2 is a diagram showing an example of display on a screen according to the present invention, and FIG. 3 is a diagram showing an example of display on a screen according to the conventional method. FIG. 11...CPU, 12...Floppy disk, 1
3...disk, 14...hard copy, 15...
・Screen, 16...Keyboard.

Claims (1)

[Claims] A program display comprising a search means for searching for constituent elements of a hierarchically structured program, a specifying means for specifying a key statement to be displayed, and a display means for displaying the constituent elements and statements. method.