#include <stdio.h> #include <stdlib.h>
int main() { int week; scanf("%d",&week); switch(week) { case 0:printf("sunday\n");break; case 1:printf("monday\n");break; case 2:printf("tuesday\n");break; case 3:printf("wednesday\n");break; case 4:printf("thursday\n");break; case 5:printf("friday\n");break; case 6:printf("saturday\n");break; default:printf("error\n"); } return 0; }
#include <stdio.h> #include <stdlib.h>
int main() { float a,b; char c; printf("please enter a,b and op:"); scanf("%f%c%f",&a,&c,&b); switch(c) { case '+':printf("%f+%f=%f\n",a,b,a+b);break; case '-':printf("%f-%f=%f\n",a,b,a-b);break; case '*':printf("%f*%f=%f\n",a,b,a*b);break; case '/':if(b!=0.0) { printf("%f/%f=5f\n",a,b,a/b);break; } default:printf("error"); } return 0; }
