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Write a function called digit_counter that takes the name of a text file as input and returns the number of digits (i.e., any of the characters, 0-to-9) that the file contains. If there is a problem opening the file, the function returns -1
function[c]=digit_counter(filename) fid=fopen(filename,'rt'); if fid<0 error('error opening file %s', filename); ...
9 years 前 | 2 个回答 | 0
