Comparing first character in char* line?-CodePudding

I want to check if a line begins with the charatcer "#". My current code gives me a segmenation fault when I run it. How do I get the first character from a char*?

int checkLine(char* line){
  
        char l [250];
        strcpy(l,line);
        char first_char = l[0];

        //Check for comment
        if (first_char ==  "#"){
                return 0;
        }
        return 1;
}

CodePudding user response：

you just got to change the If statement, instead of using "#" you should use '#', as you're representing a char, not a String. Btw, there is no need to copy your first char into a variable, you can use if (l[0]=='#')

CodePudding user response：

int checkLine(char* line)
{
    return ('#'==*line);
}

should be enough. Usually it happens that the empty spaces also need to be skipped before to check for '#'.

So you could do this way as well:

int checkLine(char* line)
{
    while (' '==*line) line  ;
    return ('#'==*line);
}