View Compilation Error

0_0_20109134_24108.c: In function 'main':
0_0_20109134_24108.c:28:2: error: 'for' loop initial declarations are only allowed in C99 or C11 mode
  for (int m = 0; m <j; m++)printf("%d\n", piao[m]);
  ^
0_0_20109134_24108.c:28:2: note: use option -std=c99, -std=gnu99, -std=c11 or -std=gnu11 to compile your code