Compilare: user.c: In function ‘main’: user.c:24:4: warning: implicit declaration of function ‘isdigit’ [-Wimplicit-function-declaration] if(linie[i]=='"' || isdigit(linie[i])!=0) ^ user.c:79:7: warning: suggest explicit braces to avoid ambiguous ‘else’ [-Wparentheses] if(linie[i]=='"' || isdigit(linie[i])!=0) ^ user.c:10:7: warning: unused variable ‘c’ [-Wunused-variable] char c,*linie; ^ user.c:9:23: warning: unused variable ‘j’ [-Wunused-variable] int ok=1,nrcol,i,k=0,j; ^ user.c:15:8: warning: ignoring return value of ‘fgets’, declared with attribute warn_unused_result [-Wunused-result] fgets(linie,1024,f); ^ user.c:68:9: warning: ignoring return value of ‘fgets’, declared with attribute warn_unused_result [-Wunused-result] fgets(linie,1024,h); ^