View Compilation Error

0_0_2117845_145.c:4:21: algorithm: No such file or directory
0_0_2117845_145.c:5: error: syntax error before "namespace"
0_0_2117845_145.c:16: error: syntax error before "cmp"
0_0_2117845_145.c: In function `main':
0_0_2117845_145.c:30: error: syntax error before '/' token
0_0_2117845_145.c:31: error: syntax error before ')' token
0_0_2117845_145.c:33: error: syntax error before ')' token
0_0_2117845_145.c: At top level:
0_0_2117845_145.c:55: error: syntax error before "return"