Removing the " n" from a string read using fgets()

Question

Usually when using the fgets() function it reads the string but is sensitive to Enter, like reading the string to be adding to it the " n"??

Answer 1

The function fgets() is similar to the function gets(), however, in addition to being able to read from a data file and include the new line character in the string, it also specifies the maximum size of the input string, the function gets() does not have this control, which could lead to "buffer overflow errors".

To remove the ' n' you can do as follows:

minhaString[strcspn(minhaString, "\n")] = 0;

Source.

Answer 2

One thing you can do is read the string with the '\n' and delete it later by typing a ' 0' instead of the \n.

Another thing you can do is read the string letter by letter, via Getcha. So you have full control over what you write in your string.

Answer 3

The best way, in my opinion, is to read the full string and then remove the '\n'

char input[1000];
size_t len;
if (!fgets(input, sizeof input, stdin)) { /* tratamento de erro */ }
len = strlen(input);
if (len == 0) { /* normalmente isto nunca acontece */ }

/* alguns "ficheiros de texto" nao tem '\n' na ultima linha */
if (input[len - 1] == '\n') input[--len] = 0; // remove '\n' e actualiza len

Answer 4

To remove ' n' from the end of the string, try this:

size_t ln = strlen(input) - 1;
if (name[ln] == '\n')
    name[ln] = '\0';

Source: https://stackoverflow.com/a/2693827/194717

or this:

char *pos;
if ((pos=strchr(input, '\n')) != NULL)
    *pos = '\0';

Source: https://stackoverflow.com/a/2693826/194717

Answer 5

Once read the String you can use String class methods. Ex.:

string teste;
FILE arquivo;
arquivo = fopen("arquivo.txt" , "r");
if( fgets (teste, [tamanho do arquivo], arquivo)!=NULL ) {
  puts(teste);
}
fclose(arquivo);
string testeSemN = teste.Replace("\n", String.Empty);
// ou também: teste.Replace("\n", "");