Z-World XP8900 Manuel d'utilisateur télécharger pdf (Page 60)

PK2100

A-4 s Appendix A: Troubleshooting

Common Programming Errors

 Values for constants or variables out of range.

 Counting up from, or down to, one instead of zero. In the software

world, ordinal series often begin or terminate with zero, not one.

 Confusing a functions definition with an instance of its use in a

listing.

 Not ending statements with semicolons.

 Not inserting commas as required in functions parameter lists.

 Leaving out an ASCII space character between characters forming a

different legalbut unwantedoperator.

 Confusing similar-looking operators such as && with &, == with =, //

with /, etc.

 Inadvertently inserting ASCII nonprinting characters into a source-

code file.

Table A-1. Ranges of Dynamic C

Function Types

Type Range

int

–32,768 (–2

) to

+32,767 (2

– 1)

long int

−2,147,483,648 (−2

) to

+2147483647 (2

– 1)

float

–6.805646 × 10

+6.805646 × 10

char

0 to 255

1 2 ... 55 56 57 58 59 60 61 62 63 64 65 ... 113 114

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Z-World XP8900 Manuel d'utilisateur Page 60