| `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 |
| `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 ```c if (C) expr; if (C) { expr; expr; } if (C) { expr; } else { expr; } ``` ```c while (C) { expr; } do { expr; } while(C); for (A; C; I) { expr; } ``` ```c goto LABEL; LABEL; ````switch`/`case` are not supported.
### Functions Entry function: ```c main() { expr; } ``` Custom function: ```c 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) |