View Compilation Error

0_0_14010189_27743.c: In function 'search':
0_0_14010189_27743.c:12:3: error: 'for' loop initial declarations are only allowed in C99 or C11 mode
   for(int i = 0; i < 8; i++) sum += Data[i][A[i]];
   ^
0_0_14010189_27743.c:12:3: note: use option -std=c99, -std=gnu99, -std=c11 or -std=gnu11 to compile your code
0_0_14010189_27743.c:14:8: error: 'for' loop initial declarations are only allowed in C99 or C11 mode
  }else for(int i = 0; i < 8; i++){
        ^
0_0_14010189_27743.c: In function 'main':
0_0_14010189_27743.c:29:3: error: 'for' loop initial declarations are only allowed in C99 or C11 mode
   for(int i = 0; i < 8; i++){
   ^
0_0_14010189_27743.c:30:4: error: 'for' loop initial declarations are only allowed in C99 or C11 mode
    for(int j = 0; j < 8; j++){
    ^