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#include <stdio.h>
 
int main(void)
{
  int c;
  while ((c = getchar()) != EOF)
  {
    if (c == '\n')
      printf("\\n");
    else if (c == '\\')
      printf("\\\\");
    else if (c == '"')
      printf("\\\"");
    else
      printf("%c", c);
  }
  return 0;
}

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• # 1:   hide show   clone   input   46 days 3 hours ago    Success

  result: Success     time: 0.01s    memory: 1724 kB     returned value: 0

  input:

  ";
  int main(void)
  {
    printf("char s[] = \"");
    char *t = s;
    while (*t)
    {
      if (*t == '\n')
        printf("\\n");
      else if (*t == '"')
        printf("\\\"");
      else if (*t == '\\')
        printf("\\\\");
      else
        printf("%c", *t);
      t++;
    }
    printf("%s", s);
    return 0;
  }
  

  output:

  \";\nint main(void)\n{\n  printf(\"char s[] = \\\"\");\n  char *t = s;\n  while (*t)\n  {\n    if (*t == '\\n')\n      printf(\"\\\\n\");\n    else if (*t == '\"')\n      printf(\"\\\\\\\"\");\n    else if (*t == '\\\\')\n      printf(\"\\\\\\\\\");\n    else\n      printf(\"%c\", *t);\n    t++;\n  }\n  printf(\"%s\", s);\n  return 0;\n}\n