Compilare: user.c: In function ‘structura’: user.c:47:4: warning: assignment makes integer from pointer without a cast [enabled by default] *p=NULL; ^ user.c: In function ‘fisier’: user.c:72:24: warning: suggest parentheses around ‘&&’ within ‘||’ [-Wparentheses] for (i=poz; s[i]>='a' && s[i]<='z' || s[i]<='9' && s[i]>='0'; i++) nf[i-poz]=s[i]; ^ user.c:73:11: warning: assignment makes integer from pointer without a cast [enabled by default] nf[i-poz]=NULL; ^ user.c: In function ‘citire’: user.c:37:8: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%s",s); ^