View Compilation Error

0_0_12695287_25258.cpp:1:8: macro names must be identifiers
0_0_12695287_25258.cpp:2:2: invalid preprocessing directive #denfine
0_0_12695287_25258.cpp: In function `int main()':
0_0_12695287_25258.cpp:6: error: `scanf' undeclared (first use this function)
0_0_12695287_25258.cpp:6: error: (Each undeclared identifier is reported only once for each function it appears in.)
0_0_12695287_25258.cpp:7: error: `PI' undeclared (first use this function)
0_0_12695287_25258.cpp:7: error: `printf' undeclared (first use this function)
0_0_12695287_25258.cpp:8: error: `ruturn' undeclared (first use this function)
0_0_12695287_25258.cpp:8: error: expected `;' before numeric constant