foo.c: In function 'main':
foo.c:22:1: warning: implicit declaration of function 'whlie' [-Wimplicit-function-declaration]
   22 | whlie (c!=0){
      | ^~~~~
foo.c:22:13: error: expected ';' before '{' token
   22 | whlie (c!=0){
      |             ^
      |             ;
foo.c:9:5: warning: unused variable 'd' [-Wunused-variable]
    9 | int d;
      |     ^

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