Compilare: user.cpp: In function ‘int main()’: user.cpp:25:24: warning: suggest parentheses around comparison in operand of ‘==’ [-Wparentheses] if((c[i-1][j-1]==c[i][j-1]==c[i-1][j])&&c[i][j]!=c[i-1][j-1])sub[c[i][j]]++; ^ user.cpp:12:25: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%s",&a[1]); ^ user.cpp:13:25: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%s",&b[1]); ^