View Compilation Error

0_0_35429145_19420.c: In function 'main':
0_0_35429145_19420.c:15:12: error: redeclaration of 'i' with no linkage
   for (int i = 0; i < 12; i++)
            ^
0_0_35429145_19420.c:14:7: note: previous declaration of 'i' was here
   int i;
       ^
0_0_35429145_19420.c:15:3: error: 'for' loop initial declarations are only allowed in C99 or C11 mode
   for (int i = 0; i < 12; i++)
   ^
0_0_35429145_19420.c:15:3: note: use option -std=c99, -std=gnu99, -std=c11 or -std=gnu11 to compile your code