如何停止从字符串中读取换行符？

string_with_newline = "This is a string\nwith a newline"
string_without_newline = string_with_newline.replace("\n", "")
print(string_without_newline)

import re
string_with_newline = "This is a string\nwith\nmultiple\nnewlines"
string_without_newline = re.sub("\n", "", string_with_newline)
print(string_without_newline)

#include <stdio.h>
int main() {
   char string_with_newline[] = "This is a string\nwith a newline";
   int i, j;
   
   for(i = 0; string_with_newline[i] != '\0'; ++i) {
      if(string_with_newline[i] != '\n') {
         string_with_newline[j] = string_with_newline[i];
         ++j;
      }
   }
   string_with_newline[j] = '\0';
   
   printf("String without newline: %s", string_with_newline);
   
   return 0;
}