View Compilation Error

0_0_22539867_31461.cpp:8:5: error: missing terminating " character
     scanf("%%d”,&N,&i);
     ^
0_0_22539867_31461.cpp: In function 'int main()':
0_0_22539867_31461.cpp:9:16: error: expected ')' before ';' token
     s=N+(1+N)/2;
                ^