fgets() does not work as I expect it to

Question

Can anyone tell me why this code does not work? When i run, it just prints out \"Enter info about trail 1\" and without any input, skips to another step.

#in         


        

Answer 1

The perl language gives you chomp, which removes the newline from lines read from input. I find it a useful function to have lying around,

char*
chomp(char* p)
{
    if(!p) return p;
    size_t len=strlen(p);
    //if(len<=0) return(p);
    if(len>0) len--;
    if(p[len]=='\n') p[len--]='\0';
    if(len>=0) if(p[len]=='\r') p[len--]='\0';
    return(p);
}

So, declare a variable to use to read a line, and then just use gets to parse the line. Loads clearer. And notice that your array is an array of MAX arrays of char[20], and you may well enter a far larger line. It can be effective to read the entire line entered, and then extract the part you want,

char array[MAX][20];
int ndx;
char line[100];
for( ndx=0; fgets(line,sizeof(line)-1),stdin); ++ndx ) {
    chomp(line);
    strncpy(array[ndx],line,sizeof(array[ndx])-1);
    //combine both into one line:
    //strncpy(array[ndx],chomp(line),sizeof(array[ndx])-1);
    /*NULL termination of array[ndx] left as exercise for reader*/
}