Compilare: main.cpp: In function 'void bktr(int)': main.cpp:91:37: warning: narrowing conversion of '((((int)((char)car)) + 65) - 1)' from 'int' to 'char' inside { } [-Wnarrowing] st[p]={(char)car+'A'-1,'E',i}; ~~~~~~~~~~~~~^~ main.cpp:132:37: warning: narrowing conversion of '((((int)((char)car)) + 65) - 1)' from 'int' to 'char' inside { } [-Wnarrowing] st[p]={(char)car+'A'-1,'V',i}; ~~~~~~~~~~~~~^~ main.cpp:175:37: warning: narrowing conversion of '((((int)((char)car)) + 65) - 1)' from 'int' to 'char' inside { } [-Wnarrowing] st[p]={(char)car+'A'-1,'S',i}; ~~~~~~~~~~~~~^~ main.cpp:218:37: warning: narrowing conversion of '((((int)((char)car)) + 65) - 1)' from 'int' to 'char' inside { } [-Wnarrowing] st[p]={(char)car+'A'-1,'N',i}; ~~~~~~~~~~~~~^~ main.cpp: In function 'int main()': main.cpp:257:36: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("parcare.in","r",stdin); ^ main.cpp:258:38: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("parcare.out","w",stdout); ^ main.cpp:260:19: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&n); ^ main.cpp:264:20: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("\n"); ^ main.cpp:265:27: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%s",a[i]+1); ^