| Comparison of C Language and ST Language in Xinjie PLC | ||
| C Language | ST Language | |
| Addition | + | + |
| Subtraction | – | – |
| Multiplication | * | * |
| Division | / | / |
| Assignment | = | := |
| Logical AND | && | AND |
| Logical OR | || | OR |
| Logical NOT | ！ | NOT |
| Comparison – Greater Than | > | > |
| Comparison – Less Than | < | < |
| Comparison – Equal To | == | = |
| Comparison – Not Equal To | != | <> |
| Comparison – Less Than or Equal To | <= | <= |
| Comparison – Greater Than or Equal To | >= | >= |
| Exit Entire Loop | break | EXIT |
| Exit Current Loop | continue | continue |
| Modulus | a%b | a MOD b |
| Convert Float to Integer | (int)x | REAL_TO_INT(x) |
| Convert Integer to Float | (float)x | INT_TO_REAL(x) |
The differences are highlighted in the yellow part of the image below: