View Compilation Error

0_0_32229369_13772.cpp: In function 'int main()':
0_0_32229369_13772.cpp:16:23: error: expected primary-expression before 'case'
     for (int cas = 1; case <= T; cas++)
                       ^
0_0_32229369_13772.cpp:16:23: error: expected ';' before 'case'
0_0_32229369_13772.cpp:16:23: error: expected primary-expression before 'case'
0_0_32229369_13772.cpp:16:23: error: expected ')' before 'case'
0_0_32229369_13772.cpp:16:28: error: expected primary-expression before '<=' token
     for (int cas = 1; case <= T; cas++)
                            ^
0_0_32229369_13772.cpp:16:23: error: case label '<expression error>' not within a switch statement
     for (int cas = 1; case <= T; cas++)
                       ^
0_0_32229369_13772.cpp:16:32: error: expected ':' before ';' token
     for (int cas = 1; case <= T; cas++)
                                ^
0_0_32229369_13772.cpp:16:34: error: 'cas' was not declared in this scope
     for (int cas = 1; case <= T; cas++)
                                  ^