以下程序的运行结果为( )。#include int main ( ){char c1,c2;c1='A';c2=c1+32;printf("%c\n",c2);printf("%d\n",c2);return 0;}
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以下程序的运行结果为( )。#include #include int main ( ){double a,b,c,s,area;a=3.67;b=5.43;c=6.21;s=(a+b+c)/2;area=sqrt(s*(s-a)*(s-b)*(s-c));printf("a=%f\tb=%f\t%f\n",a,b,c);printf("area=%f\n",area);return 0;}
若运行以下程序时输入:1 3 2<回车>,则程序的运行结果为( )。#include #include int main ( ){double a,b,c,disc,x1,x2,p,q;scanf("%lf%lf%lf",&a,&b,&c);disc=b*b-4*a*c;p=-b/(2.0*a);q=sqrt(disc)/(2.0*a);x1=p+q;x2=p-q;printf("x1=%7.2f\nx2=%7.2f\n",x1,x2);return 0;}
#include int main(){double a=1.0;printf("%f\n",a/3);return 0;}
以下程序的运行结果为( )。#include int main(){double a=1.0;printf("%20.15f\n",a/3);return 0;}