View Compilation Error

0_0_6746084_1590.c: In function `main':
0_0_6746084_1590.c:17: error: syntax error before "long"
0_0_6746084_1590.c:17: error: syntax error before '-' token
0_0_6746084_1590.c:18: error: syntax error before "long"
0_0_6746084_1590.c:18: error: syntax error before "long"
0_0_6746084_1590.c:18: error: syntax error before ')' token
0_0_6746084_1590.c: At top level:
0_0_6746084_1590.c:29: error: syntax error before "return"