Compilare: user.cpp: In function ‘int main()’: user.cpp:18:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0;i<=strlen(a)-1;i++) ^ user.cpp:20:25: warning: suggest parentheses around ‘&&’ within ‘||’ [-Wparentheses] if(a[i]>='A'&&a[i]<='Z'||a[i]>='a'&&a[i]<='z')nrl++; ^ user.cpp:21:100: warning: suggest parentheses around ‘&&’ within ‘||’ [-Wparentheses] if(strchr("ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz",a[i])==0&&(a[i+1]>='A'&&a[i+1]<='Z'||a[i+1]>='a'&&a[i+1]<='z'))nrc++; ^ user.cpp:11:14: warning: array subscript is below array bounds [-Warray-bounds] while(a[i]!='\n') ^