View Compilation Error

0_0_8074042_6861.cpp:7: error: `time' does not name a type
0_0_8074042_6861.cpp: In function `int main()':
0_0_8074042_6861.cpp:29: error: expected `;' before "x"
0_0_8074042_6861.cpp:32: error: `x' undeclared (first use this function)
0_0_8074042_6861.cpp:32: error: (Each undeclared identifier is reported only once for each function it appears in.)
0_0_8074042_6861.cpp:32: error: `y' undeclared (first use this function)
0_0_8074042_6861.cpp:33: error: `z' undeclared (first use this function)
0_0_8074042_6861.cpp:33: error: `f' undeclared (first use this function)