Compilare: main.cpp: In function 'int main()': main.cpp:10:1: warning: this 'for' clause does not guard... [-Wmisleading-indentation] for(i=2; i*i<=n; i++) ^~~ main.cpp:13:2: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'for' for(i=2; i*i<=n; i++) ^~~ main.cpp:8:7: warning: unused variable 'x' [-Wunused-variable] { int x, i, n, cnt=0, j; ^