my_malloc.c

/*
 *  Source:     malloc.c
 *  Program:    malloc
 *  Version:    1.0.0
 *  Target-OS:  AmigaOS
 *
 *  Purpose:    demonstrate dynamic memory allocation
 *
 *  Author: Micha B. / 2.11.2022
 *
 *  Compiler: SAS/C v6.59
 *  Release: sc NOSTACKCHECK OPTIMIZE OPTTIME OPTLOOP CPU=ANY ADDSYM SMALLCODE NOICONS BATCH IDLEN=64 COMNEST STREQ STRMERGE LIB:scnb.lib LIB:amiga.lib
 *  Debug: sc NOSTACKCHECK DEBUG=SYMBOLFLUSH NOOPT CPU=ANY ADDSYM SMALLCODE NOICONS BATCH IDLEN=64 COMNEST STREQ STRMERGE LIB:sc:scnb.lib LIB:amiga.lib LIB:debug.lib
 */
#include <exec/types.h>
#include <proto/exec.h>

#include <dos/dos.h>
#include <proto/dos.h>

#include <proto/intuition.h>

#include <string.h>
#include <stdio.h>
#include <stdlib.h> /* malloc(), calloc(), free() */

#define SIZE 1024

int main( int argc, char *argv[] )
{
    int i=0, length=0;
    //char *teststring = (char *)calloc(SIZE, sizeof(char));
    //char *targetstring = (char *)calloc(SIZE, sizeof(char));

    char *teststring = (char *)malloc(SIZE * sizeof(char));
    char *targetstring = (char *)malloc(SIZE * sizeof(char));

    if(teststring != NULL)
    {
        puts("Memory OK for teststring!");
    }
    else
    {
        puts("No memory left for teststring!");
        return 0;
    }

    if(targetstring != NULL)
    {
        puts("Memory OK for targetstring!");
    }
    else
    {
        puts("No memory left for targetstring!");
        return 0;
    }

    printf("\nI am a test program, dynamically allocating memory...\n");
    #ifdef __STORMGCC__
        printf("Hello, StormGCC!\n");
    #endif
    #ifdef __STORMC__
        printf("Hello, StormC v3!\n");
    #endif
    #ifdef __SASC
        printf("Hello, SAS C!\n");
    #endif
    #ifdef __GNUC__
        printf("Hello, GCC!\n");
    #endif
    #ifdef __VBCC__
        printf("Hello, VBCC!\n");
    #endif

    printf("\nAll Setup Done.\nSkelleton is working. Start coding now!\n\n");

    /* Let's play with the string */

    teststring = "Aa Bb Cc Dd STOP";
    length = strlen(teststring);

    printf("Länge: %ld, sizeof(testring): %ld, teststring: \t\t%s\n", length, sizeof(teststring), teststring);

    /* zeichenweise umkopieren */
    i = 0;
    while(teststring[i] != '\0')
    {
        //printf("i = %ld, teststring[%ld] = %s\n", i, i, &teststring);
        targetstring[i] = teststring[i];
        i++;
    }
    targetstring[i] = 0;

    /* Vergleichsausgabe */
    length = strlen(targetstring);
    printf("Länge: %ld, sizeof(targetstring): %ld, targetstring: \t%s\n", length, sizeof(targetstring), targetstring);

    /* allozierten Speicher freigeben */
    free(targetstring);
    free(teststring);

    return(0);
}