Compilare: main.cpp: In function 'void ec2()': main.cpp:41:7: warning: suggest explicit braces to avoid ambiguous 'else' [-Wparentheses] if( x != 0 && del >= 0 && sqrt( del ) == ( pp = ( int )sqrt( del ) ) ) ^ main.cpp: In function 'void ec1()': main.cpp:18:35: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf( fin, "%d=%d", &y, &z ); ^ main.cpp: In function 'void ec2()': main.cpp:30:45: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf( fin, "2+%dx+%d=%d", &y, &z, &q ); ^ main.cpp: In function 'int main()': main.cpp:63:34: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf( fin, "%d%d", &n, &k ); ^ main.cpp:65:33: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf( fin, "%d", &xx ); ^ main.cpp:70:40: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf( fin, "%dx%c", &x, &ch ); ^