View Compilation Error

0_0_29532231_5609.c: In function 'main':
0_0_29532231_5609.c:10:2: error: 'for' loop initial declarations are only allowed in C99 or C11 mode
  for(int cas = 1; cas <= t; cas++)
  ^
0_0_29532231_5609.c:10:2: note: use option -std=c99, -std=gnu99, -std=c11 or -std=gnu11 to compile your code
0_0_29532231_5609.c:15:3: error: 'for' loop initial declarations are only allowed in C99 or C11 mode
   for(int i = 1; i <= n; i++)
   ^
0_0_29532231_5609.c:17:3: error: 'for' loop initial declarations are only allowed in C99 or C11 mode
   for(int j = 1; j <= n; j++)
   ^