View Compilation Error

867850_0_0_24855.cpp: In function `int main()':
867850_0_0_24855.cpp:6: error: `str' undeclared (first use this function)
867850_0_0_24855.cpp:6: error: (Each undeclared identifier is reported only once for each function it appears in.)
867850_0_0_24855.cpp:6: error: expected `;' before "d"
867850_0_0_24855.cpp:7: error: `d' undeclared (first use this function)
867850_0_0_24855.cpp:8: error: non-lvalue in assignment
867850_0_0_24855.cpp:9: error: expected `;' before ')' token
867850_0_0_24855.cpp:16: error: expected primary-expression before "if"
867850_0_0_24855.cpp:16: error: expected `;' before "if"
867850_0_0_24855.cpp:16: error: expected primary-expression before "if"
867850_0_0_24855.cpp:16: error: expected `)' before "if"
867850_0_0_24855.cpp:28: error: expected `)' before "b"