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Calculate a file length. The file need to be in `rb` mode (reading and binary mode)
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| #include <stdio.h> | |
| int flen(FILE *f) | |
| { | |
| int len; | |
| fseek(f, 0, SEEK_END); | |
| len = ftell(f); | |
| rewind(f) | |
| return len; | |
| } |
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