View Compilation Error

0_0_2114731_6866.c:2:24: algorithm: No such file or directory
0_0_2114731_6866.c:3: error: syntax error before "namespace"
0_0_2114731_6866.c: In function `mat_init':
0_0_2114731_6866.c:9: error: 'for' loop initial declaration used outside C99 mode
0_0_2114731_6866.c:11: error: 'for' loop initial declaration used outside C99 mode
0_0_2114731_6866.c:19: error: 'for' loop initial declaration used outside C99 mode