View Compilation Error

0_0_18654794_17115.c: In function 'sort':
0_0_18654794_17115.c:12:2: error: 'for' loop initial declarations are only allowed in C99 or C11 mode
  for (int i=0;i<n;i++)
  ^
0_0_18654794_17115.c:12:2: note: use option -std=c99, -std=gnu99, -std=c11 or -std=gnu11 to compile your code
0_0_18654794_17115.c:14:3: error: 'for' loop initial declarations are only allowed in C99 or C11 mode
   for (int j=n-1;j>i;j--)
   ^
0_0_18654794_17115.c: In function 'main':
0_0_18654794_17115.c:41:3: error: 'for' loop initial declarations are only allowed in C99 or C11 mode
   for (int i=0;i<n;i++)
   ^
0_0_18654794_17115.c:53:3: error: 'for' loop initial declarations are only allowed in C99 or C11 mode
   for (int j=0;j<n;j++)
   ^
0_0_18654794_17115.c:56:2: error: expected expression before '/' token
  //   printf("m=%d\n",m);
  ^