inginer.c:4: warning: built-in function 'y1' declared as non-function inginer.c: In function 'main': inginer.c:53: warning: assignment from incompatible pointer type inginer.c:54: warning: assignment from incompatible pointer type inginer.c:75: warning: assignment from incompatible pointer type inginer.c:52: warning: ignoring return value of 'fscanf', declared with attribute warn_unused_result inginer.c:67: warning: ignoring return value of 'fscanf', declared with attribute warn_unused_result inginer.c:71: warning: ignoring return value of 'fscanf', declared with attribute warn_unused_result