Compilare: main.cpp: In function 'int main()': main.cpp:12:31: warning: 'y' may be used uninitialized in this function [-Wmaybe-uninitialized] return (i2 - i + 1) * (j2 - j + 1) == s[i2][j2][t] - s[i - 1][j2][t] - s[i2][j - 1][t] + s[i - 1][j - 1][t]; ~~~^~~ main.cpp:41:28: note: 'y' was declared here int contor = 0, x, y; ^ main.cpp:12:62: warning: 'x' may be used uninitialized in this function [-Wmaybe-uninitialized] return (i2 - i + 1) * (j2 - j + 1) == s[i2][j2][t] - s[i - 1][j2][t] - s[i2][j - 1][t] + s[i - 1][j - 1][t]; ~~^~~ main.cpp:41:25: note: 'x' was declared here int contor = 0, x, y; ^