View Compilation Error

0_0_34631016_26918.cpp:9:14: error: stray '\241' in program
              printf(“%d\n\n”,n/2*(n+1));
              ^
0_0_34631016_26918.cpp:9:14: error: stray '\260' in program
0_0_34631016_26918.cpp:9:14: error: stray '\' in program
0_0_34631016_26918.cpp:9:14: error: stray '\' in program
0_0_34631016_26918.cpp:9:14: error: stray '\241' in program
0_0_34631016_26918.cpp:9:14: error: stray '\261' in program
0_0_34631016_26918.cpp: In function 'int main()':
0_0_34631016_26918.cpp:9:23: error: expected primary-expression before '%' token
              printf(“%d\n\n”,n/2*(n+1));
                       ^
0_0_34631016_26918.cpp:9:24: error: 'd' was not declared in this scope
              printf(“%d\n\n”,n/2*(n+1));
                        ^