Compilare: main.cpp: In function 'bool verificare_2(int, int)': main.cpp:24:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0;i < strlen(d[x]);i++) { ~~^~~~~~~~~~~~~~ main.cpp:26:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int j = 0;j < strlen(d[y]);j++) { ~~^~~~~~~~~~~~~~ main.cpp:35:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int j = 0;j < strlen(d[y]);j++) { ~~^~~~~~~~~~~~~~ main.cpp:37:21: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0;i < strlen(d[x]);i++) { ~~^~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:60:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0;i < strlen(c);i++) { ~~^~~~~~~~~~~ main.cpp:64:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (strlen(c) > m) { ~~~~~~~~~~^~~ main.cpp:114:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int j = 0;j < strlen(d[i]);j++) { ~~^~~~~~~~~~~~~~