Compilare: user.c: In function ‘Adaug’: user.c:18:5: warning: implicit declaration of function ‘malloc’ [-Wimplicit-function-declaration] Coada z = (Coada) malloc(sizeof(struct nod)); ^ user.c:18:23: warning: incompatible implicit declaration of built-in function ‘malloc’ [enabled by default] Coada z = (Coada) malloc(sizeof(struct nod)); ^ user.c: In function ‘Sterg’: user.c:33:5: warning: implicit declaration of function ‘free’ [-Wimplicit-function-declaration] free(z); ^ user.c:33:5: warning: incompatible implicit declaration of built-in function ‘free’ [enabled by default] user.c: In function ‘fin’: user.c:42:23: warning: incompatible implicit declaration of built-in function ‘malloc’ [enabled by default] a[i] = (int *)malloc(sizeof(int)); ^ user.c:49:9: warning: implicit declaration of function ‘realloc’ [-Wimplicit-function-declaration] a[x] = (int *)realloc(a[x],(a[x][0]+1)*sizeof(int)); ^ user.c:49:23: warning: incompatible implicit declaration of built-in function ‘realloc’ [enabled by default] a[x] = (int *)realloc(a[x],(a[x][0]+1)*sizeof(int)); ^ user.c: In function ‘bfs’: user.c:58:5: warning: implicit declaration of function ‘memset’ [-Wimplicit-function-declaration] memset(cost,-1,sizeof(cost)); ^ user.c:58:5: warning: incompatible implicit declaration of built-in function ‘memset’ [enabled by default]