2 + bx + c =0; x1= 
; x2= 
| Var a, b, c: REAL; { } x1, x2: REAL; { } d: REAL; { } begin WRITELN ('* *'); WRITE (' '); WRITELN (' <Enter>'); READLN (a, b, c): { -'} | d: = b*b-4*a*c {' '} JF d>=0 Theh begin x1:= -b+sgrt(d)/(2*a); x2:=-b-sgrt(d)/(2*a); WRITELN (' '); WRITELN ('x1=', x1, x2=', x2); end else WRITELN (' '); End. |
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OC MS DOS
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| BM DOS | |||
| EM BIOS | |||
| BIOS | |||
DOS- . a Setup DOS + , , , CONFIG.SYS AUTOEXEC.BAT. . autoexec.bat config.sys ().
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D:\STUDENT\IVANOV\LABRAB\Labl.txt- , STUDENT, IVANOV, LABRAB : Labl.txt. 8 + 3 ().
** .com, **.exe - ; *** .bat - DOSa; *** .bas- ; * . - ; *** .bac ; *** .arj, ****.zip, ***.Lzh .
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command.com , : DIR C:\*.com - ( ) OC DIR . : () .
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PROMT=SP$G
Path=d:\sysdisk\dos622;d:\ ..
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MD [<:>] [<>\] [< >] [< >] [ 1/ 2]. : MD A:\DATA\LABOR ( LABOR) DATE : ( ). DIR [<:>] [< >\] [< >] [ ] [ 1/ 2].
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(: Change Directory):
