Compilare: user.cpp: In function ‘void frecventa()’: user.cpp:29:19: warning: array subscript has type ‘char’ [-Wchar-subscripts] fr[0][c[i]]++; ^ user.cpp: In function ‘int main()’: user.cpp:163:12: warning: converting to non-pointer type ‘char’ from NULL [-Wconversion-null] c[lg+1]=NULL; ^ user.cpp:184:25: warning: array subscript has type ‘char’ [-Wchar-subscripts] frsir[litera]+=suma[poz][litera]; ^ user.cpp:184:44: warning: array subscript has type ‘char’ [-Wchar-subscripts] frsir[litera]+=suma[poz][litera]; ^ user.cpp:192:25: warning: array subscript has type ‘char’ [-Wchar-subscripts] frsir[litera]=frcaps[litera]; ^ user.cpp:192:40: warning: array subscript has type ‘char’ [-Wchar-subscripts] frsir[litera]=frcaps[litera]; ^ user.cpp:193:25: warning: array subscript has type ‘char’ [-Wchar-subscripts] frsir[litera]+=suma[poz][litera]; ^ user.cpp:193:44: warning: array subscript has type ‘char’ [-Wchar-subscripts] frsir[litera]+=suma[poz][litera]; ^ user.cpp:195:39: warning: array subscript has type ‘char’ [-Wchar-subscripts] fprintf(g," %d\n",frsir[litera]); ^ user.cpp:155:15: warning: unused variable ‘ascii’ [-Wunused-variable] int q,i,k,ascii; ^ user.cpp:156:19: warning: unused variable ‘p’ [-Wunused-variable] long long poz,p; ^ user.cpp:157:10: warning: unused variable ‘ch’ [-Wunused-variable] char ch,litera; ^ user.cpp: In function ‘long long int rez(long long int)’: user.cpp:151:1: warning: control reaches end of non-void function [-Wreturn-type] } ^ user.cpp: In function ‘int main()’: user.cpp:160:31: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%lld %d",&lg,&q); ^ user.cpp:161:24: warning: ignoring return value of ‘char* fgets(char*, int, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] fgets(c+1,100012,f); ^ user.cpp:162:24: warning: ignoring return value of ‘char* fgets(char*, int, FILE*)’, declared with attribute warn_unused_result [-Wunused-result]