View Compilation Error

0_0_3045006_12546.c:2: error: syntax error before "namespace"
0_0_3045006_12546.c: In function `getred':
0_0_3045006_12546.c:11: error: 'for' loop initial declaration used outside C99 mode
0_0_3045006_12546.c: In function `dfs':
0_0_3045006_12546.c:24: error: 'for' loop initial declaration used outside C99 mode
0_0_3045006_12546.c:27: error: 'for' loop initial declaration used outside C99 mode
0_0_3045006_12546.c:32: error: 'for' loop initial declaration used outside C99 mode
0_0_3045006_12546.c:40: error: 'for' loop initial declaration used outside C99 mode