View Compilation Error

0_0_17659088_4056.cpp: In function 'int DFS(int, int)':
0_0_17659088_4056.cpp:8:24: error: return-statement with no value, in function returning 'int' [-fpermissive]
     if(map[x][y]=='*') return;
                        ^
0_0_17659088_4056.cpp:9:24: error: return-statement with no value, in function returning 'int' [-fpermissive]
     if(map[x][y]=='T') return;
                        ^
0_0_17659088_4056.cpp:10:30: error: return-statement with no value, in function returning 'int' [-fpermissive]
     if(x<0||x>=a||y<0||y>=b) return;
                              ^