/in/foo.c: In function 'main':
/in/foo.c:13:25: error: invalid suffix "x" on integer constant
   13 |                 y=2*x*x+4x-5;
      |                         ^~
/in/foo.c:14:27: warning: conversion lacks type at end of format [-Wformat=]
   14 |                 printf("%.3",y);
      |                           ^
/in/foo.c:14:24: warning: too many arguments for format [-Wformat-extra-args]
   14 |                 printf("%.3",y);
      |                        ^~~~~
/in/foo.c:18:27: warning: conversion lacks type at end of format [-Wformat=]
   18 |                 printf("%.3",y);
      |                           ^
/in/foo.c:18:24: warning: too many arguments for format [-Wformat-extra-args]
   18 |                 printf("%.3",y);
      |                        ^~~~~
/in/foo.c:22:27: warning: conversion lacks type at end of format [-Wformat=]
   22 |                 printf("%.3",y);
      |                           ^
/in/foo.c:22:24: warning: too many arguments for format [-Wformat-extra-args]
   22 |                 printf("%.3",y);
      |                        ^~~~~