schi1.c: In function 'main': schi1.c:23: warning: implicit declaration of function 'cautMinim' schi1.c:27: warning: implicit declaration of function 'cautMaxim' schi1.c:12: warning: ignoring return value of 'fscanf', declared with attribute warn_unused_result schi1.c:15: warning: ignoring return value of 'fscanf', declared with attribute warn_unused_result schi1.c:20: warning: ignoring return value of 'fscanf', declared with attribute warn_unused_result schi1.c:22: warning: ignoring return value of 'fscanf', declared with attribute warn_unused_result