Pascal for C users
From Free Pascal wiki
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Note: Logical operators (AND/OR/XOR etc) are logical or boolean depending on the type of the arguments (boolean or integer). Since Pascal had a separate boolean type from the start, boolean operators on integers were not necessary, and are always logical.
| C | Pascal | |
|---|---|---|
| { | Begin | |
| } | End | |
| = | := | Becomes |
| == | = | Equal |
| / | / | Float Division (Integer: div) |
| % | Mod | Modulo operation |
| ! | Not | Logical and boolean depending on arguments |
| != | <> | Not equal |
| && | And | |
| || | Or | |
| ^ | Xor | |
| >> | Shr | bit shift right |
| << | Shl | bit shift left |
| ++ | Inc | |
| -- | Dec | |
| /* | { or (* | Comment start |
| */ | } or *) | Comment end |
| // | // | End of line comment (only one line comment) |
| 0x | $ | prefix for hex-number e.g. $FFFFFF |
| if() | If Then | |
| if() else | If Then Else | |
| while | While Do | |
| do while | Repeat Until Not | |
| do while ! | Repeat Until | |
| for ++ | For To Do | |
| for -- | For Downto Do | |
| switch case break | Case Of End | |
| switch case break default | Case Of Else End |
| C type | Pascal type | Size (bits) | Range | |
|---|---|---|---|---|
| char | Char | 8-bit | ASCII | |
| signed char | Shortint | 8-bit | -128 .. 127 | |
| unsigned char | Byte | 8-bit | 0 .. 255 | |
| char* | PChar | (32-bit) | Pointer to a null-terminated string | |
| short int | SmallInt | 16-bit | -32768 .. 32767 | |
| unsigned short int | Word | 16-bit | 0 .. 65535 | |
| int | Integer | (16-bit or) 32-bit | -2147483648..2147483647 | Generic integer types |
| unsigned int | Cardinal | (16-bit or) 32-bit | 0 .. 4294967295 | Generic integer types |
| long int | LongInt | 32-bit | -2147483648..2147483647 | |
| unsigned long int | LongWord | 32-bit | 0 .. 4294967295 | |
| float | Single | 32-bit | 1.5E-45 .. 3.4E+38 | |
| double | Double | 64-bit | 5.0E-324 .. 1.7E+308 |
| C type | Pascal | |
|---|---|---|
| struct { } | Record End | |
| union { } | Record Case Of End | Variant Record |
| C | Pascal | Unit |
|---|---|---|
| abs | Abs | System |
| acos | ArcCos | Math |
| asin | ArcSin | Math |
| atan | ArcTan | System |
| atof | StrToFloat | SysUtils |
| atoi | StrToInt | SysUtils |
| atol | StrToInt | SysUtils |
| atoll | StrToInt64 | SysUtils |
| ceil | Ceil | Math |
| cos | Cos | System |
| exp | Exp | System |
| floor | Floor | Math |
| pow | Power | Math |
| round | Round | System |
| sin | Sin | System |
| sqrt | Sqrt | System |
| strcpy | Copy | System |
| strlen | Length | System |
| tan | Tan | Math |
| toupper | UpCase | System |
