since factorial is for example , the factorial of 5 = 5 (5-1)(5-2)(5-3)(5-4)
that means the last number to subtract from 5 is 4 , which is (n-1)
ie the factorial of any number is (n-0)(.............)(n-(n-1))
to write this ,
5 REM to calculate the factorial of any number
6 DIM fac AS INTEGER
LET fac = 1
10 INPUT "enter the number to find its factorial "; a ' variable a
15 FOR b = 0 TO (a-1) 'numbers that will be subtracted from the " a"
20 c= a -b 'each number in the factorial calculation
25 fac = fac * c 'to compute each multiplication in the factorial
30 NEXT b
35 PRINT 'to leave a line
40 PRINT fac
45 END
note this due to some unattained raesons works for numbers 0 to 7
The QBASIC program actually comes in 2 different flavors... A> QBASIC interpreter program: QBASIC Version 1.1 B> QBASIC compiler program: QBASIC 4.5/or, QB64/or, -etc. ...so, the answer is that this programming language comes in both forms: 'interpreter/compiler' versions; and, you have to select which of these you would prefer to download and use. *NOTE*: The compiler version of the language tends to be much larger; whereas, the interpreter version of the language tends to be small/very compact, indeed; thus, the interpreter tends to take up far less disk space. Many people start off their programming career by using QBASIC version 1.1 'interpreter' program; in order to learn 'how to' program. The interpreter version of the program can only create plain text (.bas) files; the which code CANNOT be shared with others; (not unless the persons who you are sharing this type of code with do already have a copy of the QBASIC interpreter program installed on their own computer). Then, later on, down the line...when they have become fully capable programmers themselves; they go and download a QBASIC 'compiler' program version, instead; which will allow them to go and create stand alone (.exe) program files that they can share with anybody. This is because (.exe) program files can RUN/execute entirely independently of the QBASIC program itself.
END '...END of program/halt program code execution. *NOTE*: There should be only 'one' END statement written inside of a QBASIC program. I have seen example code where they use multiple END statements; this is wrong!
Write a program that calculates the area of a triangle in QBASIC
a triangle then a square :)
#!/usr/bin/perl print factorial($ARGV[11]); sub factorial { my($num) = @_; if($num == 1) { return 1; # stop at 1, factorial doesn't multiply times zero } else { return $num * factorial($num - 1); # call factorial function recursively } }
To stop a program from running in QBASIC, you can press "Ctrl" + "Break" on your keyboard. This interrupts the program execution and returns you to the QBASIC command prompt. Alternatively, you can close the QBASIC window to terminate the program. If you want to exit gracefully, you can also use the END statement in your code to stop execution at a specific point.
In Prolog, a simple factorial program can be defined using recursion. Here's a basic implementation: factorial(0, 1). % Base case: factorial of 0 is 1 factorial(N, Result) :- N > 0, N1 is N - 1, factorial(N1, Result1), Result is N * Result1. % Recursive case You can query the factorial of a number by calling factorial(N, Result). where N is the number you want to compute the factorial for.
The QBASIC program actually comes in 2 different flavors... A> QBASIC interpreter program: QBASIC Version 1.1 B> QBASIC compiler program: QBASIC 4.5/or, QB64/or, -etc. ...so, the answer is that this programming language comes in both forms: 'interpreter/compiler' versions; and, you have to select which of these you would prefer to download and use. *NOTE*: The compiler version of the language tends to be much larger; whereas, the interpreter version of the language tends to be small/very compact, indeed; thus, the interpreter tends to take up far less disk space. Many people start off their programming career by using QBASIC version 1.1 'interpreter' program; in order to learn 'how to' program. The interpreter version of the program can only create plain text (.bas) files; the which code CANNOT be shared with others; (not unless the persons who you are sharing this type of code with do already have a copy of the QBASIC interpreter program installed on their own computer). Then, later on, down the line...when they have become fully capable programmers themselves; they go and download a QBASIC 'compiler' program version, instead; which will allow them to go and create stand alone (.exe) program files that they can share with anybody. This is because (.exe) program files can RUN/execute entirely independently of the QBASIC program itself.
END '...END of program/halt program code execution. *NOTE*: There should be only 'one' END statement written inside of a QBASIC program. I have seen example code where they use multiple END statements; this is wrong!
(1) Immediate mode In this mode, QBASIC performs the command/instruction that we type in immediately after we press the enter key. (2) Program mode In this mode, the instructions/commands we type in are not performed as we type them in, but are first stored in the computer memory as a program. This program can be executed later, at a high speed.
Write a program that calculates the area of a triangle in QBASIC
this is a code for calculating it recursivelly: float Factorial (float n) { if (n<=1) return 1.0; else return n* Factorial(n-1); }
a triangle then a square :)
H. Tornsdorf has written: 'Windows 3.1 - Trucos y Consejos' 'QBasic for beginners' -- subject(s): QBasic (Computer program language)
To write a program that calculates the factorial of a number in PHP, you can use a recursive function or an iterative approach. Here’s a simple example using a loop: function factorial($n) { $result = 1; for ($i = 2; $i <= $n; $i++) { $result *= $i; } return $result; } echo factorial(5); // Outputs: 120 This code defines a function that multiplies numbers from 2 up to the given number $n to compute the factorial.
CHOICE OF EITHER 32 BIT/OR ELSE, 64 BIT QBASIC PROGRAM VERSIONS There are both 32 bit/64 bit QBASIC program versions. You have to select which is the correct version that will run on your own operating system. For example,... -> Windows 95/98/XP, runs the 32 bit version(s) -> Windows 7 runs the 64 bit version CHOICE OF EITHER QBASIC 'INTERPRETER'/OR ELSE, 'COMPILER' VERSIONS QBASIC Version 1.1 was the original version; however, it is 'interpreter' only. This means you CANNOT use it to create stand alone [.exe]cutable files with. QBASIC Version 4.5 is a 'compiler' version; which CAN be used to create stand alone [.exe]cutable files with. QB64 is the 64 bit 'compiler' version which runs on 64 bit platforms; it can also be used to create stand alone [.exe]cutable files with.
kjhk