How to find out about the transition to a new line when entering from a file?

    4 answers 4

    You can read like this ...

    #include <stdio.h> int main() { char c; FILE *bu=fopen("input.txt","r"); int i=0; while (c!='\n') { fscanf(bu,"%c",&c); i++; } fclose(bu); return 0; }

    But a lot depends on what is the end of the line ... The end may be, for example, the following combination # 13 # 10 (in hex), that is, translation to the next line and carriage shift to the left, to the beginning of the line. Or maybe just # 10. Different operating systems have different line completion options. In the fscanf example, for reasons not yet understood, I missed the symbol r (code # 13) and went straight to n (code # 10). That is, we waited for reading the appearance of n and came out =)

      It depends on how the file is read. If character by character, then compare the read character with the newline character '\ n'. If byte-bye, then compare with acc. sequences of bytes (different on different OS). And you can simply take the lines directly with getline.

      • Here it turns out that when using the >> operator, any \ n is automatically skipped. - jurbasiq
      • If, for example, numbers from an unformatted file are entered, then nothing. - DUP

      n - newline character

      • i.e. canon line takes 3 lines? :) - zavtramen
      • not. meant the symbol '\\ n' - sudo97

      While reading, to test each character character by '\n' , if the character is equal to '\n' , then add one more line.