foo.c: In function 'pai':
foo.c:28:16: warning: returning 'int *' from a function with return type 'int' makes integer from pointer without a cast [-Wint-conversion]
   28 |         return pg;
      |                ^~
foo.c: In function 'main':
foo.c:34:5: warning: 'm' is used uninitialized [-Wuninitialized]
   34 |     int tt[m],zt[m];
      |     ^~~
foo.c:33:15: note: 'm' declared here
   33 |     int i,j,n,m,o;
      |               ^
foo.c:35:5: warning: 'n' is used uninitialized [-Wuninitialized]
   35 |     int pg[n];
      |     ^~~
foo.c:33:13: note: 'n' declared here
   33 |     int i,j,n,m,o;
      |             ^

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