Compilare: user.cpp: In function ‘int main()’: user.cpp:18:12: warning: suggest parentheses around assignment used as truth value [-Wparentheses] if (p=1) ^ user.cpp:35:30: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (j=2;j<strlen(s)-1;j++) ^ user.cpp:38:34: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (i=j;i<strlen(s)-1;i+=2) ^ user.cpp:16:25: warning: unused variable ‘ok’ [-Wunused-variable] int p,i,j,k,m=0,l=2,ok; i=l; ^