Eroare de compilare: user.cpp: In function ‘void back(int)’: user.cpp:20:2: error: ‘forpvalj’ was not declared in this scope forpvalj=1pvalj<=Npvalj++) ^ user.cpp:20:11: error: unable to find numeric literal operator ‘operator"" pvalj’ forpvalj=1pvalj<=Npvalj++) ^ user.cpp:20:19: error: ‘Npvalj’ was not declared in this scope forpvalj=1pvalj<=Npvalj++) ^ user.cpp:20:27: error: expected ‘;’ before ‘)’ token forpvalj=1pvalj<=Npvalj++) ^ user.cpp:19:11: warning: unused variable ‘pval’ [-Wunused-variable] { int pval; ^ user.cpp: In function ‘int main()’: user.cpp:35:26: warning: operation on ‘i’ may be undefined [-Wsequence-point] for(i=4;i<=n;i=i+=2) ciur[i]=1; ^ user.cpp:40:20: error: ‘r’ was not declared in this scope r[j]=1; ^