View Compilation Error

1_728_995_26477.c: In function 'main':
1_728_995_26477.c:7:2: error: 'for' loop initial declarations are only allowed in C99 or C11 mode
  for(int i=1;i<=t;i++)
  ^
1_728_995_26477.c:7:2: note: use option -std=c99, -std=gnu99, -std=c11 or -std=gnu11 to compile your code
1_728_995_26477.c:17:4: error: 'for' loop initial declarations are only allowed in C99 or C11 mode
    for(int j=5;j<=n;j++)
    ^