Compilare: user.cpp: In function ‘int main()’: user.cpp:29:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (i = 1; i <= n; i++) { ^ user.cpp:30:26: warning: suggest parentheses around ‘+’ inside ‘>>’ [-Wparentheses] fin >> matrix[i] + 1; ^ user.cpp:31:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (j = 1; j <= n; j++) { ^ user.cpp:60:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (i = 1; i <= n; i++) { ^ user.cpp:61:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (j = 1; j <= n; j++) { ^