View Compilation Error

0_0_22207718_16029.cpp:25:10: error: stray '\21' in program
          while(l!=3)
          ^
0_0_22207718_16029.cpp:33:18: error: stray '\20' in program
                  sum1=sum1+ii;
                  ^
0_0_22207718_16029.cpp:35:18: error: stray '\20' in program
                  sum1=sum1-ii;
                  ^