View Compilation Error

0_0_21579970_5751.cpp: In function 'int main()':
0_0_21579970_5751.cpp:43:5: error: expected initializer before 'scanf'
     scanf("%d", &t);
     ^
0_0_21579970_5751.cpp:44:11: error: 't' was not declared in this scope
     while(t--) {
           ^