View Compilation Error

0_0_17531828_3135.cpp:7:1: error: stray '\243' in program
 printf（"%.21f\n",m);
 ^
0_0_17531828_3135.cpp:7:1: error: stray '\250' in program
0_0_17531828_3135.cpp: In function 'int main()':
0_0_17531828_3135.cpp:6:10: error: 'fabs' was not declared in this scope
 {m=fabs(n);
          ^
0_0_17531828_3135.cpp:7:9: error: expected ';' before string constant
 printf（"%.21f\n",m);
         ^