View Compilation Error

0_0_22692030_18208.c: In function 'main':
0_0_22692030_18208.c:13:2: error: 'for' loop initial declarations are only allowed in C99 or C11 mode
  for (int i = 0; i < T; ++i)
  ^
0_0_22692030_18208.c:13:2: note: use option -std=c99, -std=gnu99, -std=c11 or -std=gnu11 to compile your code
0_0_22692030_18208.c:19:3: error: 'for' loop initial declarations are only allowed in C99 or C11 mode
   for (int j = 0; j < N; ++j)
   ^
0_0_22692030_18208.c:26:12: error: redefinition of 'j'
   for (int j = 0; j < N; ++j)
            ^
0_0_22692030_18208.c:19:12: note: previous definition of 'j' was here
   for (int j = 0; j < N; ++j)
            ^
0_0_22692030_18208.c:26:3: error: 'for' loop initial declarations are only allowed in C99 or C11 mode
   for (int j = 0; j < N; ++j)
   ^