Main.cc: In function 'int main()':
Main.cc:7:27: error: expected primary-expression before '<' token
    7 |             for(int k=0;k=<9;k++){
      |                           ^
Main.cc:8:17: error: 'm' was not declared in this scope
    8 |                 m=i*100+j*10+k;
      |                 ^
Main.cc:4:9: warning: unused variable 'a' [-Wunused-variable]
    4 |     int a,b,c;
      |         ^
Main.cc:4:11: warning: unused variable 'b' [-Wunused-variable]
    4 |     int a,b,c;
      |           ^
Main.cc:4:13: warning: unused variable 'c' [-Wunused-variable]
    4 |     int a,b,c;
      |             ^