main(){float a,b,sum;printf("put now money :a=\n");scanf("%f\n",&a);printf("b=/n");sacnf("%f\n",&b);printf("you have money:\n");printf("%f",&sum);}
运行以后:put now money :a=我输入1个数字,按回车,光标往下跳,不出现b=,是怎么回事??