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GNU Info (g77-300.info)Expressions in FORMAT StatementsExpressions in `FORMAT' Statements ---------------------------------- `g77' doesn't support `FORMAT(I<J>)' and the like. Supporting this requires a significant redesign or replacement of `libg2c'. However, `g77' does support this construct when the expression is constant (as of version 0.5.22). For example: PARAMETER (IWIDTH = 12) 10 FORMAT (I<IWIDTH>) Otherwise, at least for output (`PRINT' and `WRITE'), Fortran code making use of this feature can be rewritten to avoid it by constructing the `FORMAT' string in a `CHARACTER' variable or array, then using that variable or array in place of the `FORMAT' statement label to do the original `PRINT' or `WRITE'. Many uses of this feature on input can be rewritten this way as well, but not all can. For example, this can be rewritten: READ 20, I 20 FORMAT (I<J>) However, this cannot, in general, be rewritten, especially when `ERR=' and `END=' constructs are employed: READ 30, J, I 30 FORMAT (I<J>) automatically generated by info2www version 1.2.2.9 |