View Compilation Error

0_0_16956530_2984.cpp: In function 'int main()':
0_0_16956530_2984.cpp:49:5: error: 'T' was not declared in this scope
     T=read();
     ^
0_0_16956530_2984.cpp:54:9: error: 'n' was not declared in this scope
         n=read();
         ^
0_0_16956530_2984.cpp:57:15: error: too few arguments to function 'void gauss(int)'
         gauss();
               ^
0_0_16956530_2984.cpp:20:6: note: declared here
 void gauss(int n)
      ^
0_0_16956530_2984.cpp:58:9: error: 'm' was not declared in this scope
         m=read();
         ^