View Compilation Error

0_0_3941770_24023.c: In function `DFS':
0_0_3941770_24023.c:9: error: 'for' loop initial declaration used outside C99 mode
0_0_3941770_24023.c:13: error: 'for' loop initial declaration used outside C99 mode
0_0_3941770_24023.c: In function `main':
0_0_3941770_24023.c:27: error: 'for' loop initial declaration used outside C99 mode