Compilare: user.cpp: In function ‘int main()’: user.cpp:24:18: warning: suggest parentheses around ‘+’ inside ‘>>’ [-Wparentheses] fin>>a[i]+1; ^ user.cpp:44:30: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0;i<=strlen(c)-1;i++){ ^ user.cpp:72:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(p=1;p<=strlen(c)-1;p++){ ^ user.cpp:88:30: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0;i<=strlen(c)-p-1;i++){ ^ user.cpp:135:35: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(i==strlen(c)-1-p && p==strlen(c)-1) ^ user.cpp:135:53: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(i==strlen(c)-1-p && p==strlen(c)-1) ^ user.cpp:16:20: warning: unused variable ‘M’ [-Wunused-variable] {int n,m,i,j,k,p,s,M; ^ user.cpp:101:32: warning: ‘s’ may be used uninitialized in this function [-Wmaybe-uninitialized] s++; ^