Compilare: user.c: In function ‘main’: user.c:93:5: warning: implicit declaration of function ‘malloc’ [-Wimplicit-function-declaration] gutui=(gutui1 *)malloc(N*sizeof(gutui1)); ^ user.c:93:21: warning: incompatible implicit declaration of built-in function ‘malloc’ [enabled by default] gutui=(gutui1 *)malloc(N*sizeof(gutui1)); ^ user.c:110:5: warning: implicit declaration of function ‘qsort’ [-Wimplicit-function-declaration] qsort(gutui,N,sizeof(gutui1),comparator); ^ user.c:86:21: warning: unused variable ‘y’ [-Wunused-variable] int N,H,U,i,j,x,y,totalg=0,max,*culese,index=0; ^ user.c:89:11: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(pFile,"%i",&N); ^ user.c:90:11: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(pFile,"%i",&H); ^ user.c:91:11: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(pFile,"%i",&U); ^ user.c:99:15: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(pFile,"%i",&gutui[i].h); ^ user.c:100:15: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(pFile,"%i",&gutui[i].g); ^ user.c:134:22: warning: ‘x’ may be used uninitialized in this function [-Wmaybe-uninitialized] gutui[x].g=0; ^