View Compilation Error

0_0_17547758_5852.c: In function 'ttt':
0_0_17547758_5852.c:37:3: error: 'for' loop initial declarations are only allowed in C99 or C11 mode
   for (int j=0;j<=9;++j)
   ^
0_0_17547758_5852.c:37:3: note: use option -std=c99, -std=gnu99, -std=c11 or -std=gnu11 to compile your code
0_0_17547758_5852.c: In function 'doing':
0_0_17547758_5852.c:75:1: error: expected expression before '/' token
 // cout<<ans<<endl;
 ^