View Compilation Error

0_0_39628561_32541.cpp: In function 'int main()':
0_0_39628561_32541.cpp:5:18: error: invalid conversion from 'const char*' to 'char' [-fpermissive]
    5 |         char s = "";
      |                  ^~
      |                  |
      |                  const char*
0_0_39628561_32541.cpp:11:21: error: invalid conversion from 'const char*' to 'char' [-fpermissive]
   11 |                 s = "%c\n%d", s, r;
      |                     ^~~~~~~~
      |                     |
      |                     const char*