View Compilation Error

0_0_8262649_23787.cpp: In function `int main()':
0_0_8262649_23787.cpp:3: error: `in' undeclared (first use this function)
0_0_8262649_23787.cpp:3: error: (Each undeclared identifier is reported only once for each function it appears in.)
0_0_8262649_23787.cpp:3: error: expected `;' before "a"
0_0_8262649_23787.cpp:4: error: `a' undeclared (first use this function)
0_0_8262649_23787.cpp:6: error: `s' undeclared (first use this function)
0_0_8262649_23787.cpp:7: error: `b' undeclared (first use this function)
0_0_8262649_23787.cpp:10: error: `print' undeclared (first use this function)
0_0_8262649_23787.cpp:11: error: `retrn' undeclared (first use this function)
0_0_8262649_23787.cpp:11: error: expected `;' before numeric constant