在C中分割多行字符串

Question

how can I split a multi-line string in const char* array.?

Here is the input string.

const char* str = "122.123,-38.789"
                  "122.123,-39.78";

I need to get two string from this.

str1 = "122.123,-38.789";

str2 = "122.123,-39.78";

output of

printf("string='%s'", str)

string='122.123,-38.789122.123,-39.78'

What should be done to split this string ?

Answer 1

Use an array of char *

#include <stdio.h>
const char* str[] = { "122.123,-38.789" ,  "122.123,-39.78" };

int main(){
  printf("%s\n%s\n",str[0],str[1] );
  return 0;
}

---

How the compiler understood your code:

The C pre-processor concats strings placed together,

const char* str = "122.123,-38.789"
                  "122.123,-39.78";

The linebreak between the strings is parsed as a blank, treated the same as a space or a tab. So it's equivalent to:

const char* str = "122.123,-38.789" "122.123,-39.78";

which the preprocessor converts to

const char* str = "122.123,-38.789122.123,-39.78";