View Compilation Error

0_0_33311826_14902.c: In function 'main':
0_0_33311826_14902.c:18:3: error: 'for' loop initial declarations are only allowed in C99 or C11 mode
   for (int i = 0; i < n; i++) {
   ^
0_0_33311826_14902.c:18:3: note: use option -std=c99, -std=gnu99, -std=c11 or -std=gnu11 to compile your code
0_0_33311826_14902.c:25:12: error: redefinition of 'i'
   for (int i = 0; i < n; i++) {
            ^
0_0_33311826_14902.c:18:12: note: previous definition of 'i' was here
   for (int i = 0; i < n; i++) {
            ^
0_0_33311826_14902.c:25:3: error: 'for' loop initial declarations are only allowed in C99 or C11 mode
   for (int i = 0; i < n; i++) {
   ^