View Compilation Error

0_0_5309119_9671.c:1: error: syntax error before '}' token
0_0_5309119_9671.c:2: error: `head' undeclared here (not in a function)
0_0_5309119_9671.c:3: error: syntax error before "while"
0_0_5309119_9671.c:6: error: invalid type argument of `->'
0_0_5309119_9671.c:7: error: syntax error before "while"
0_0_5309119_9671.c:16: error: invalid type argument of `->'
0_0_5309119_9671.c:17: error: syntax error before '}' token
0_0_5309119_9671.c:34: error: syntax error before '}' token
0_0_5309119_9671.c:37: error: redefinition of 'p3'
0_0_5309119_9671.c:2: error: previous definition of 'p3' was here
0_0_5309119_9671.c:37: error: invalid type argument of `->'
0_0_5309119_9671.c:38: error: syntax error before '}' token
0_0_5309119_9671.c:41: error: syntax error before "while"
0_0_5309119_9671.c:44: error: syntax error before string constant