Compilare: main.cpp: In function 'int valuarea_expresiei()': main.cpp:25:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<strlen(aux);i++) ~^~~~~~~~~~~~ main.cpp:28:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<strlen(aux);i++) ~^~~~~~~~~~~~ main.cpp:35:11: warning: suggest explicit braces to avoid ambiguous 'else' [-Wparentheses] if(strchr("xtzy",aux[i])) ^ main.cpp:52:13: warning: this 'else' clause does not guard... [-Wmisleading-indentation] else ^~~~ main.cpp:54:17: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'else' i=j; ^ main.cpp:50:13: warning: 'c' may be used uninitialized in this function [-Wmaybe-uninitialized] if(c=='-') ^~