Eroare de compilare: user.c: In function ‘back’: user.c:11:6: warning: suggest explicit braces to avoid ambiguous ‘else’ [-Wparentheses] if(i>0&&j>0) ^ user.c: In function ‘main’: user.c:32:23: error: ‘l_s1’ undeclared (first use in this function) fscanf(fp,"%d %d",&l_s1,&l_s2); ^ user.c:32:23: note: each undeclared identifier is reported only once for each function it appears in user.c:32:29: error: ‘l_s2’ undeclared (first use in this function) fscanf(fp,"%d %d",&l_s1,&l_s2); ^ user.c:52:4: warning: passing argument 3 of ‘back’ from incompatible pointer type [enabled by default] back(fp,a,s1,s2,l_s1,l_s2); ^ user.c:10:6: note: expected ‘char *’ but argument is of type ‘int *’ void back(FILE* fp,char**a,char*s1,char*s2,int i,int j){ ^ user.c:52:4: warning: passing argument 4 of ‘back’ from incompatible pointer type [enabled by default] back(fp,a,s1,s2,l_s1,l_s2); ^ user.c:10:6: note: expected ‘char *’ but argument is of type ‘int *’ void back(FILE* fp,char**a,char*s1,char*s2,int i,int j){ ^