Compilare: main.cpp: In function 'int main()': main.cpp:80:7: warning: unused variable 'aux' [-Wunused-variable] int aux=n; ^~~ main.cpp:90:7: warning: unused variable 'aux' [-Wunused-variable] int aux=n; ^~~ main.cpp:10:6: warning: unused variable 'n1' [-Wunused-variable] int n1=n; ^~ main.cpp:9:48: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%d%d%d%d%d\n",&lin,&col,&n,&m,&nr); ^ main.cpp:14:24: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%c",&chr); ^ main.cpp:25:23: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%d",&x); ^ main.cpp:28:24: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%c",&chr); ^