View Compilation Error

0_0_8792960_6674.cpp: In function `int main()':
0_0_8792960_6674.cpp:7: error: `t' undeclared (first use this function)
0_0_8792960_6674.cpp:7: error: (Each undeclared identifier is reported only once for each function it appears in.)
0_0_8792960_6674.cpp:13: error: `y' undeclared (first use this function)