Compilare: main.cpp: In function 'int main()': main.cpp:19:5: warning: this 'for' clause does not guard... [-Wmisleading-indentation] for(i=3;i<=1000000;i+=2); ^~~ main.cpp:20:9: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'for' if(ciur[i]==0) ^~ main.cpp:20:18: warning: array subscript is above array bounds [-Warray-bounds] if(ciur[i]==0) ~~~~~~^