View Compilation Error

0_0_19636348_8082.cpp: In function 'int main()':
0_0_19636348_8082.cpp:6:25: error: 'T' was not declared in this scope
     while (~scanf("%d",&T)) {
                         ^
0_0_19636348_8082.cpp:8:20: error: 'm' was not declared in this scope
             cin >> m >> n;
                    ^
0_0_19636348_8082.cpp:8:25: error: 'n' was not declared in this scope
             cin >> m >> n;
                         ^