Main.c: In function 'main':
Main.c:106:22: error: 'sr' undeclared (first use in this function); did you mean 'sz'?
  106 |     printf("%d%d",sw,sr)
      |                      ^~
      |                      sz
Main.c:106:22: note: each undeclared identifier is reported only once for each function it appears in
Main.c:106:25: error: expected ';' before 'if'
  106 |     printf("%d%d",sw,sr)
      |                         ^
      |                         ;
  107 | 
  108 |     if(sw==sz){
      |     ~~                   
Main.c:47:18: warning: variable 'sz' set but not used [-Wunused-but-set-variable]
   47 |     int rw,rz,sw,sz,i;
      |                  ^~