Compilare: main.cpp: In function 'int main()': main.cpp:35:22: warning: statement has no effect [-Wunused-value] p==1; ~^~~ main.cpp:34:20: warning: this 'if' clause does not guard... [-Wmisleading-indentation] { if(j==1) ^~ main.cpp:37:21: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'if' if(j==n) ^~ main.cpp:38:23: warning: statement has no effect [-Wunused-value] u==n; ~^~~ main.cpp:54:27: warning: 'u' may be used uninitialized in this function [-Wmaybe-uninitialized] s=s+(u-p+1); ~^~ main.cpp:54:27: warning: 'p' may be used uninitialized in this function [-Wmaybe-uninitialized]