View Compilation Error

0_0_4324261_5738.c:2:21: pthread.h: No such file or directory
0_0_4324261_5738.c: In function `test1':
0_0_4324261_5738.c:29: error: syntax error before '/' token
0_0_4324261_5738.c:44: error: syntax error before '/' token
0_0_4324261_5738.c: In function `test2':
0_0_4324261_5738.c:55: error: syntax error before '/' token
0_0_4324261_5738.c: In function `main':
0_0_4324261_5738.c:75: error: syntax error before '/' token
0_0_4324261_5738.c:82: error: `pthread_t' undeclared (first use in this function)
0_0_4324261_5738.c:82: error: (Each undeclared identifier is reported only once
0_0_4324261_5738.c:82: error: for each function it appears in.)
0_0_4324261_5738.c:82: error: syntax error before "ct"
0_0_4324261_5738.c:86: error: `ct' undeclared (first use in this function)