Compilare: user.c: In function ‘main’: user.c:43:8: warning: suggest explicit braces to avoid ambiguous ‘else’ [-Wparentheses] if (x != 0) ^ user.c:71:5: warning: format ‘%d’ expects argument of type ‘int’, but argument 2 has type ‘long int’ [-Wformat=] printf("\n%d - %d",i,j); ^ user.c:71:5: warning: format ‘%d’ expects argument of type ‘int’, but argument 3 has type ‘long int’ [-Wformat=] user.c:79:5: warning: format ‘%d’ expects argument of type ‘int’, but argument 2 has type ‘long int’ [-Wformat=] printf("\n%d",sol); ^ user.c:82:5: warning: format ‘%d’ expects argument of type ‘int’, but argument 3 has type ‘long int’ [-Wformat=] fprintf(f,"%d",sol); ^ user.c:66:5: warning: unused variable ‘ok’ [-Wunused-variable] int ok =1; ^ user.c:18:14: warning: ignoring return value of ‘fgets’, declared with attribute warn_unused_result [-Wunused-result] fgets(s,32767,f); ^ user.c:77:19: warning: ‘B’ may be used uninitialized in this function [-Wmaybe-uninitialized] sol += v[B-power[i]] - v[A - power[i]]-k; ^ user.c:69:7: warning: ‘A’ may be used uninitialized in this function [-Wmaybe-uninitialized] if(power[i]<=A){ ^ user.c:27:32: warning: ‘N’ may be used uninitialized in this function [-Wmaybe-uninitialized] if (i == 1 && cont<=N) { ^