View Compilation Error

0_0_18601900_4802.cpp: In function 'int main()':
0_0_18601900_4802.cpp:6:11: error: 'x' was not declared in this scope
 if(t>=90&&x<=100)
           ^
0_0_18601900_4802.cpp:18:1: error: 'retrun' was not declared in this scope
 retrun 0;
 ^