Python << Previous Next >> Rust

ANSIC

Based on study.com: The C programming language was developed in the Bell Labs of AT&T by an employee called Dennis Ritchie between 1969 and 1973 while working on Unix operating system. He created this language using ALGOL, BCPL, and B the languages that were used before C was created. He added many powerful features to C and used it to further develop the UNIX operating system. American National Standards Institute (ANSI) in 1983, formed a committee to provide a comprehensive definition to the C language and thus came into existence the new ANSI C language with better features.

C Programming (1999)

Computer Programming in C for Beginners (2020)

// Our first program
#include <stdio.h>
#include <stdlib.h>
int main()
{
    printf("Hello world!\n");
    return 0;
}

cp2022_ANSIC_w_tinyc_scite.7z (for cp2022 @gm users only) / cp2022_ANSIC_w_tinyc_scite.7z for @nfu

// from https://stackoverflow.com/questions/6127503/shuffle-array-in-c
#include <stdio.h> //for printf()
#include <stdlib.h> //for srand() and rand()
#include <time.h> //for time()
#include <memory.h> //for memcpy()
// 作業, 請計算各數值在各位數出現的總數, 是否依照亂數機率出現?
// 作業, 請將此程式改用 Brython 編寫.

void main ()
{
    int elesize = sizeof (int);
    int i;
    int j;
    int r;
    int num = 10;
    int times = 50;
    int src [num];
    int tgt [num];
    
    srand ( (unsigned int) time (0) );
    
    for (j = 0; j < times; j++)
    {
        for (i = 0; i < num; src [i] = i++);
        
        for (i = num; i > 0; i --)
        {
            r = rand () % i;
            memcpy (&tgt [num - i], &src [r], elesize);
            memcpy (&src [r], &src [i - 1], elesize);
        }
        
        for (i = 0; i < num; printf ("%d ", tgt [i++] ) );
        printf("\n");
    }
}

利用 Differential Evoluation (差分進化演算法), 以 ANSI C 程式語言編寫適應方程式的最大化或最小化演算:

volume_in_de_ex1.c

其他範例程式

相同演算法, 以 CPython 解題:

volume_in_de_ex1.py

相同演算法, 以 Brython 解題.

此一採固定表面積的紙盒體積最大化運算範例, volume_in_de_ex1.py 的原始作者為李孟恭 (https://github.com/kmollee/algorithm/blob/master/de.py)

從 lw-oopc 的簡介以及升級版 lw-oopc 原始碼中, 則可以進一步對 ANSI C 在嵌入式 (embedded) 系統上的應用有所了解.

Python << Previous Next >> Rust