Compilare: user.c: In function ‘partitie’: user.c:29:5: warning: implicit declaration of function ‘time’ [-Wimplicit-function-declaration] srand(time(NULL)); ^ user.c:32:25: warning: operation on ‘*(a + (sizetype)((unsigned int)r * 4u))’ may be undefined [-Wsequence-point] a[e]=a[e]+a[r]-(a[r]=a[e]); ^ user.c:38:37: warning: operation on ‘*(a + (sizetype)((unsigned int)i * 4u))’ may be undefined [-Wsequence-point] a[index]=a[index]+a[i]-(a[i]=a[index]); ^ user.c:41:33: warning: operation on ‘*(a + (sizetype)((unsigned int)r * 4u))’ may be undefined [-Wsequence-point] a[index]=a[index]+a[r]-(a[r]=a[index]); ^ user.c: At top level: user.c:56:1: warning: return type defaults to ‘int’ [enabled by default] main() ^ user.c: In function ‘main’: user.c:63:11: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%i %i %i",&N,&A,&B); ^ user.c:67:15: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%i",&x); ^