View Compilation Error

0_0_8444252_9783.c:2:20: algorithm: No such file or directory
0_0_8444252_9783.c:3: error: syntax error before "namespace"
0_0_8444252_9783.c:5: error: syntax error before "cmp"
0_0_8444252_9783.c: In function `main':
0_0_8444252_9783.c:18: error: 'for' loop initial declaration used outside C99 mode