compare two strings in c

2:25

6:53

3:39

12:22

14:26

8:37

12:21

2:53

12:21

4:29

1:27

2:10

2:14

31:32

19:25

4:55

4:45

2:33

2:43

1:41:36

1:41:36

1:37:40

1:41:35

1:41:36

1:41:36

4:47

2:10

1:37:40

2:10

1:41:36

1:41:36

2:10

1:41:36

2:38

5:34

1:41:36

1:04

1:37:40

2:39

1:07