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Casio FX-870P

casio-FX-879P.jpg

Manual (Japanese with English commentary): CasioVX-4-Manual-Peter-Rost.pdf

Programming in C

Navigation

S (red), F.COM (blue) Enter C programming mode
S
 Source - edit code
R
 Run - compile and run code
Arrow keys
 Select program
(after program run) S, M or type edit

Edit code
S (red), MEMO (line)

Go to line

Types

char
 8 bit
short
 16 bit
int
 16 bit
unsigned
 16 bit
long
 32 bit
float
 32 bit
double
 64 bit

structs or unions are not supported.

Flow control

if (C)
  expr;

if (C) {
  expr;
  expr;
}

if (C) {
  expr;
} else {
  expr;
}
while (C) {
  expr;
}

do {
  expr;
} while(C);

for (A; B;C; C)I) {
  expr;
}
goto LABEL;

LABEL;

switch/case are not supported.

Functions

Entry function:

main() {
  expr;
}

Custom function:

int foo(buf,x,y)
  char buf[];
  int x;
  int y;
{
  int i;
  expr;
}

Variables need to be declared first then assigned.

Functions are declared in pre-ANSI style. Inner variables need to be defined at body top.

int getchar()
int getc(FILE) / int fgetc(FILE)

For stdin file: extern FILE *stdin;
int putchar(char)
int putc(char, FILE) / int fputc(char, FILE)

For stdout file: extern FILE *stdout;

There is also printer(?): extern File *stdprn
char *gets(char *) (unsafe)
 
char msg[8];
gets(msg);
pringf("Hello: %s",msg);
char fgets(char *, int buflen, FILE)
 
extern FILE *stdin;
main() {
  char msg[8];
  fgets(msg,8,stdin);
  pringf("Hello: %s",msg);
}
int puts(char *)
int fputs(char *,FILE)
printf(format, args, ...)
fpritf(FILE, format, args, ...)
sprintf(char *buf, format, args, ...)
int scanf(format, args, ...)
int fscanf(FILE, format, args, ...)
int sscanf(char *buf, format, args, ...)
int fflush(FILE)
int inport(int n)
outport(int n, int i)
clearerr(FILE in)
breakpt()
exit() / abort()
char *malloc(unsigned size)
char *calloc(unsigned n,unsigned size)
int free(char *)
int strlen(char *)
char *strcpy(char *dest, char *src)
char *?strcat(char *dest, char *src)
int strcmp(char *, char *)
char strchr(char *,char)
int abs(int)
double sin(double) [cos, tan, asin, acos, atan, sinh, cosh, tanh, asinh, acosh, atanh]
double pow(double, double)
double sqrt(double)
double exp(double)
double log(double) / double log10(double)
angle(unsigned)

mode for sin etc.: 0 - deg, 1 - rad, 2 - gra
beep(unsigned)


clrscr()


gotoxy(unsigned x, unsigned y)

x - between 0 and 31 (inc), y - between 0 and 3 (inc)

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