Compilare: user.c: In function ‘allocMat’: user.c:33:6: warning: unused variable ‘i’ [-Wunused-variable] int i; ^ user.c: At top level: user.c:45:6: warning: return type of ‘main’ is not ‘int’ [-Wmain] void main() ^~~~ user.c: In function ‘main’: user.c:50:2: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fIn,"%d %d",&sizeS1,&sizeS2); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ user.c:55:3: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fIn,"%d",s1+i); ^~~~~~~~~~~~~~~~~~~~~ user.c:57:3: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fIn,"%d",s2+i); ^~~~~~~~~~~~~~~~~~~~~