Compilare: main.cpp: In function 'int main()': main.cpp:9:38: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("expresie3.in","r",stdin); ^ main.cpp:10:40: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("expresie3.out","w",stdout); ^ main.cpp:12:26: warning: ignoring return value of 'char* fgets(char*, int, FILE*)', declared with attribute warn_unused_result [-Wunused-result] fgets (v,20001,stdin); ^ main.cpp:117:18: warning: iteration 29 invokes undefined behavior [-Waggressive-loop-optimizations] if (con[i]!=50000) ~~~~~^ main.cpp:115:16: note: within this loop for (i=1; i<=30; i++) ~^~~~ main.cpp:15:15: warning: iteration 29 invokes undefined behavior [-Waggressive-loop-optimizations] con[i]=50000; ~~~~~~^~~~~~ main.cpp:14:16: note: within this loop for (i=1; i<=30; i++) ~^~~~ main.cpp:69:38: warning: array subscript is below array bounds [-Warray-bounds] if (v[w[phar-1]-1]==' ') ~~~~~~~~~~~~~^ main.cpp:71:35: warning: array subscript is below array bounds [-Warray-bounds] while (v[j]==' ') ~~~^