Compilare: main.cpp: In function 'int main()': main.cpp:89:16: warning: 'c2' may be used uninitialized [-Wmaybe-uninitialized] 89 | fprintf(fout, "%d %d %d %d", l1, c1, l2, c2); | ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ main.cpp:54:52: note: 'c2' was declared here 54 | int c, q, k, i, lin, col, maxarea, l1, c1, l2, c2, nrop, step; | ^~ main.cpp:89:16: warning: 'l2' may be used uninitialized [-Wmaybe-uninitialized] 89 | fprintf(fout, "%d %d %d %d", l1, c1, l2, c2); | ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ main.cpp:54:48: note: 'l2' was declared here 54 | int c, q, k, i, lin, col, maxarea, l1, c1, l2, c2, nrop, step; | ^~ main.cpp:89:16: warning: 'c1' may be used uninitialized [-Wmaybe-uninitialized] 89 | fprintf(fout, "%d %d %d %d", l1, c1, l2, c2); | ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ main.cpp:54:44: note: 'c1' was declared here 54 | int c, q, k, i, lin, col, maxarea, l1, c1, l2, c2, nrop, step; | ^~ main.cpp:89:16: warning: 'l1' may be used uninitialized [-Wmaybe-uninitialized] 89 | fprintf(fout, "%d %d %d %d", l1, c1, l2, c2); | ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ main.cpp:54:40: note: 'l1' was declared here 54 | int c, q, k, i, lin, col, maxarea, l1, c1, l2, c2, nrop, step; | ^~