The term "translation limits" refers to the minimum numbers of various element that a C compiler must be able to handle. These include such things as the length of identifiers, levels of nesting, number of case statements, and a number of member allowed in structure or union. C99 has increased several of these limits beyond the already generous ones specified by C89. Here are some examples:
Limit C89 C99
Nesting levels of blocks 15 127
Nesting levels of conditional inclusion 8 63
Significant characters in an internal identifier 31 63
Significant characters in an external identifier 6 31
Members of a structure or union 127 1023
Arguments in a function call 31 127
Numbers of case statement in switch 257 1023
Ref: C, The Complete Reference by Herbert Schildt (Fourth Edition)
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Some good c-examples
c_program_examples
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