C - 为用户输入添加引号

Question

I want to add quotes to the input given by the user and cannot figure out how.

printf("Please enter a name: ");
    char string[50];

    scanf ("%[^\n]%*c", string);

After this Id like to be able to add the quotes. So if the user types Bob, it is stored as "Bob". Thanks

Answer 1

Then, write:

string[0] = '"';
scanf ("%[^\n]%*c", string + 1);
size_t len = strlen(string);
string[len] = '"';
string[len + 1] = '\0';

Call scanf() on string + 1 after storing '"' at string[0] . Then obtain the length of the string to add another '"' to its end.

Answer 2

You can do this

if(fgets(string,50,stdin)!=NULL){
   char anotherstring[50];
   string[strcspn(string,"\n")]=0;
   int len = (int) strlen(string);
   if(sprintf(anotherstring,"\"%s\"", string) == len+2){
      // anotherstring contains quoted string
   }
}

Here you could have used scanf - you would have to check the return value of scanf to know whether it is successful or not. Better is to use fgets - it is much easier to work with than scanf .

Also if you use scanf you should specify the number of characters that you can read -

if(scanf("%49s",string) == 1){
   ...
}