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Main.cc: In function ‘int main()’:
Main.cc:36:4: error: expected primary-expression before ‘||’ token
   36 | if(||(t2<00||t2>59)){
      |    ^~
Main.cc:8:6: warning: ignoring return value of ‘int scanf(const char*, ...)’ declared with attribute ‘warn_unused_result’ [-Wunused-result]
    8 | scanf("%d%d%d%d",&a,&b,&c,&d);
      | ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~