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View Compilation Error

0_0_39255350_22479.cpp: In function 'int main()':
0_0_39255350_22479.cpp:5:106: error: expected initializer before '==' token
    5 | using namespace std; int main() { int n; cin>>n; getchar(); while(n--) { stack<char>s; while(1) { char ch==getchar(); if(ch !=' '&&ch !='\n'&&ch !=EOF) { s.push(ch); } else { while(!s.empty()) { cout<<s.top(); s.pop(); } if(ch==' ') cout<<" "; } if(ch=='\n'||ch==EOF) { cout<<endl; break; } } } }
      |                                                                                                          ^~
0_0_39255350_22479.cpp:5:122: error: 'ch' was not declared in this scope
    5 | using namespace std; int main() { int n; cin>>n; getchar(); while(n--) { stack<char>s; while(1) { char ch==getchar(); if(ch !=' '&&ch !='\n'&&ch !=EOF) { s.push(ch); } else { while(!s.empty()) { cout<<s.top(); s.pop(); } if(ch==' ') cout<<" "; } if(ch=='\n'||ch==EOF) { cout<<endl; break; } } } }
      |                                                                                                                          ^~
0_0_39255350_22479.cpp:5:250: error: 'ch' was not declared in this scope
    5 | using namespace std; int main() { int n; cin>>n; getchar(); while(n--) { stack<char>s; while(1) { char ch==getchar(); if(ch !=' '&&ch !='\n'&&ch !=EOF) { s.push(ch); } else { while(!s.empty()) { cout<<s.top(); s.pop(); } if(ch==' ') cout<<" "; } if(ch=='\n'||ch==EOF) { cout<<endl; break; } } } }
      |                                                                                                                                                                                                                                                          ^~


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