作业二 分支循环结构
#include<stdio.h> int main(void) { int i,n; double x,sum; printf("Enter x,n:"); scanf("%lf%d",&x,&n); sum=1;for(i=1;i<=n;i++){ sum=sum*x; }
printf("x^n=%.2f\n",sum);
return 0; }
#include<stdio.h> int main(void) { double num1,num2; char op; printf("Type in an expression:"); scanf("%lf%c%lf",&num1,&op,&num2); if(op=='+') printf("=%.2f\n",num1+num2); else if(op=='-') printf("=%.2f\n",num1-num2); else if(op=='*') printf("=%.2f\n",num1*num2); else if(op=='/') printf("=%.2f\n",num1/num2); else printf("Unknown operator\n"); return 0;
}