View Compilation Error

0_0_24785731_6920.cpp: In function 'int main()':
0_0_24785731_6920.cpp:6:18: error: 'scanf' was not declared in this scope
     scanf("%d",&t);
                  ^
0_0_24785731_6920.cpp:10:18: error: 'getchar' was not declared in this scope
          getchar();
                  ^
0_0_24785731_6920.cpp:34:23: error: 'printf' was not declared in this scope
    printf("Player 1\n");
                       ^
0_0_24785731_6920.cpp:36:23: error: 'printf' was not declared in this scope
    printf("Player 2\n");
                       ^
0_0_24785731_6920.cpp:38:18: error: 'printf' was not declared in this scope
    printf("TLE\n");
                  ^