Compilare: main.cpp: In function 'int main()': main.cpp:12:43: warning: variable 'xsf' set but not used [-Wunused-but-set-variable] int n, m, i, j, xlee, ylee, xin, yin, xsf, ysf, dragoni, front, back, l, c, dr, stg, mijl, steag; ^~~ main.cpp:12:48: warning: variable 'ysf' set but not used [-Wunused-but-set-variable] int n, m, i, j, xlee, ylee, xin, yin, xsf, ysf, dragoni, front, back, l, c, dr, stg, mijl, steag; ^~~ main.cpp:18:27: 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:19:22: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%c", &ch); ^ main.cpp:22:30: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%c", &ch); ^ main.cpp:42:26: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%c", &ch); ^ main.cpp:75:31: warning: 'back' may be used uninitialized in this function [-Wmaybe-uninitialized] coada[++back].lin=xlee; ^ main.cpp:97:17: warning: 'yin' may be used uninitialized in this function [-Wmaybe-uninitialized] coada[1].col=yin; ~~~~~~~~~~~~^~~~ main.cpp:96:17: warning: 'xin' may be used uninitialized in this function [-Wmaybe-uninitialized] coada[1].lin=xin; ~~~~~~~~~~~~^~~~ main.cpp:28:31: warning: 'dragoni' may be used uninitialized in this function [-Wmaybe-uninitialized] coada[++dragoni].lin=i; ^