Compilare: main.cpp: In function 'int main()': main.cpp:16:34: warning: unused variable 'l' [-Wunused-variable] int n, m, lc, cc, i, sf, in, l, pix, piy, pfx, pfy, col, lin, j, min, linn, coll,x, ok; ^ main.cpp:16:57: warning: unused variable 'col' [-Wunused-variable] int n, m, lc, cc, i, sf, in, l, pix, piy, pfx, pfy, col, lin, j, min, linn, coll,x, ok; ^~~ main.cpp:16:62: warning: unused variable 'lin' [-Wunused-variable] int n, m, lc, cc, i, sf, in, l, pix, piy, pfx, pfy, col, lin, j, min, linn, coll,x, ok; ^~~ main.cpp:16:86: warning: unused variable 'x' [-Wunused-variable] int n, m, lc, cc, i, sf, in, l, pix, piy, pfx, pfy, col, lin, j, min, linn, coll,x, ok; ^ main.cpp:21:34: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf( fin, "%d %d", &n, &m); ^ main.cpp:22:27: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf( fin, "%c", &c); ^ main.cpp:26:43: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf( fin, "%c", &c); ^ main.cpp:46:35: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf( fin, "%c", &c); ^ main.cpp:81:17: warning: 'pfy' may be used uninitialized in this function [-Wmaybe-uninitialized] coada[1].lin=pfy; ~~~~~~~~~~~~^~~~ main.cpp:82:17: warning: 'pfx' may be used uninitialized in this function [-Wmaybe-uninitialized] coada[1].col=pfx; ~~~~~~~~~~~~^~~~ main.cpp:64:17: warning: 'piy' may be used uninitialized in this function [-Wmaybe-uninitialized] coada[1].lin=piy; ~~~~~~~~~~~~^~~~ main.cpp:65:17: warning: 'pix' may be used uninitialized in this function [-Wmaybe-uninitialized] coada[1].col=pix; ~~~~~~~~~~~~^~~~