View Compilation Error

0_0_11220642_21860.c:2:20: algorithm: No such file or directory
0_0_11220642_21860.c: In function `find':
0_0_11220642_21860.c:12: error: 'for' loop initial declaration used outside C99 mode
0_0_11220642_21860.c: In function `main':
0_0_11220642_21860.c:42: error: 'for' loop initial declaration used outside C99 mode