Question

int compress(char str[]) {

  char tempStr [256];
  int i,j, counter=0;


     if (!isdigit(str[i]) && (!isspace(str[i]))) {
        tempStr[j] = str[i];  
        j++;
        printf("%c", tempStr[i]); 
     } else {
        counter++;
     }

     str = tempStr;
}

char str[] = "abc abc abc 123";
result = compress(&str);

Question:

1. how to assign a str char to tempStr?
2. how to replace str to tempStr in function compress? I think str = tempStr is wrong

thanks

Answer 1

1.Your code miss tempStr defination, like char tempStr[LENGTH], make sure LENGTH is big enough.
2.C string should be terminated by ‘\0’, so you need set tempStr[j] = ‘\0’ after the loop (which is missing I think). Then you can use strcpy copy tempStr to str.