View Compilation Error

796658_0_0_15791.c:16: error: syntax error before "int"
796658_0_0_15791.c:16: error: syntax error before '&' token
796658_0_0_15791.c: In function `swap':
796658_0_0_15791.c:18: error: `a' undeclared (first use in this function)
796658_0_0_15791.c:18: error: (Each undeclared identifier is reported only once
796658_0_0_15791.c:18: error: for each function it appears in.)
796658_0_0_15791.c:19: error: `b' undeclared (first use in this function)
796658_0_0_15791.c: At top level:
796658_0_0_15791.c:23: error: syntax error before "int"
796658_0_0_15791.c:38: error: syntax error before "int"
796658_0_0_15791.c:65: error: syntax error before "int"