View Compilation Error

0_0_20817766_20400.cpp:7:13: error: expected ']' before ',' token
 int f[25][25,g[30];
             ^
0_0_20817766_20400.cpp: In function 'int main(int, char**)':
0_0_20817766_20400.cpp:17:15: error: 'b' was not declared in this scope
 for(int j=0;j<b;j++)
               ^
0_0_20817766_20400.cpp:18:13: error: 'f' was not declared in this scope
 scanf("%d",&f[i][j]);
             ^
0_0_20817766_20400.cpp:28:7: error: 'f' was not declared in this scope
 g[k]+=f[j][k];
       ^
0_0_20817766_20400.cpp:32:15: error: 'k' was not declared in this scope
 if(g[k1]<goal[k])break;
               ^
0_0_20817766_20400.cpp:40:4: error: 'ans' was not declared in this scope
 if(ans==-1)
    ^