How to read excel file using C

Question

I am trying to read an excel file with extension .xlsx in C using Coe-blocks. I have found the following library helps in doing so. libxls library. I have downloaded it. I have ran Test2.C in the downloaded folder. But I am getting these errors after .

||=== Build file: "no target" in "no project" (compiler: unknown) ===|
D:\Palguna\C__language\xlsx_reading\main.o:main.c|| undefined reference to `xls'|
D:\Palguna\C__language\xlsx_reading\main.o:main.c|| undefined reference to `xls_open_file'|
D:\Palguna\C__language\xlsx_reading\main.o:main.c|| undefined reference to `xls_getError'|
D:\Palguna\C__language\xlsx_reading\main.o:main.c|| undefined reference to `xls_getWorkSheet'|
D:\Palguna\C__language\xlsx_reading\main.o:main.c|| undefined reference to `xls_parseWorkSheet'|
D:\Palguna\C__language\xlsx_reading\main.o:main.c|| undefined reference to `xls_getError'|
D:\Palguna\C__language\xlsx_reading\main.o:main.c|| undefined reference to `xls_showROW'|
D:\Palguna\C__language\xlsx_reading\main.o:main.c|| undefined reference to `xls_showCell'|
D:\Palguna\C__language\xlsx_reading\main.o:main.c|| undefined reference to `xls_showBookInfo'|
||error: ld returned 1 exit status|
||=== Build failed: 10 error(s), 0 warning(s) (0 minute(s), 0 second(s)) ===|

How to resolve this. Please suggest. Thanks.