#includeint main(){char c;printf("please input a string:");while('\n'!=(c=getchar())){if(c>='0'&&c<='9')printf("%d ",('9'-c));else if((c>='a'&&c<='z')||(c>='A'&&c<='Z'))printf("%d ",c);}return 0;}
for循环无限循环了哦