C64-dev/examples/powerc-hello.c

/* powerc-hello.c - first program for Power C on the C64
 *
 * Prints a small table and demonstrates 16-bit int wrap-around,
 * so it exercises printf(), a counting loop and int arithmetic.
 *
 * Build on the Power C disk (examples/powerc-hello.d81 already holds
 * the compiled result):
 *
 *   cc hello.c
 *   link -s
 *   > hello.o
 *   > ^            (pull in stdlib.l + syslib.l)
 *   >              (empty RETURN)
 *   output file name: hello
 *
 * This file is plain ASCII; Power C needs PETSCII source with CR line
 * endings, so convert it before writing it to the image:
 *
 *   c1541 powerc-hello.d81 -write hello.pet "hello.c,s"
 *
 * Then run it with -autostart "powerc-hello.d81:hello", or from BASIC:
 *   LOAD"HELLO",8  : RUN
 */

#include <stdio.h>

main()
{
    int i, v;

    printf("power c on the c64\n");
    printf("==================\n\n");

    for (i = 1; i <= 5; i++) {
        v = i * i;
        printf("%d squared is %d\n", i, v);
    }

    v = 32767;
    v = v + 1;
    printf("\nint is 16-bit: 32767 + 1 = %d\n", v);
}