View Compilation Error

0_0_24962631_6923.c: In function 'main':
0_0_24962631_6923.c:40:2: error: 'for' loop initial declarations are only allowed in C99 or C11 mode
  for(int x=1;x<=T;++x)
  ^
0_0_24962631_6923.c:40:2: note: use option -std=c99, -std=gnu99, -std=c11 or -std=gnu11 to compile your code
0_0_24962631_6923.c:44:3: error: 'for' loop initial declarations are only allowed in C99 or C11 mode
   for (int i = 1; i <= N; ++i) {
   ^