View Compilation Error

0_0_25093642_16446.c: In function 'main':
0_0_25093642_16446.c:12:13: error: 'for' loop initial declarations are only allowed in C99 or C11 mode
             for(int i = 0; i < 6; i++)
             ^
0_0_25093642_16446.c:12:13: note: use option -std=c99, -std=gnu99, -std=c11 or -std=gnu11 to compile your code