#include<stdio.h>
int main(void)
{
int digit,letter,other;
char ch;
int i;
digit=letter=other=0;
printf("Enter 10 characters:");
for(i=1;i<=10;i++){
ch=getchar();
if((ch>='a'&&ch<='z')||(ch>'A'&&ch<='Z'))
letter++;
else if(ch>='0' && ch<='9')
digit++;
else
other++;
}
printf("letter=%d,digit=%d,other=%d\n",letter,digit,other);
return 0;
}
#include<stdio.h>
int main(void)
{
int choice,i;
double price;
for(i=1;i<=5;i++){
printf("[1]Select crisps \n");
printf("[2]Select popcorn \n");
printf("[3]Select chocolate \n");
printf("[4]Select cola \n");
printf("[0] exit \n");
printf("Enter choice:");
scanf("%d",&choice);
if(choice==0)
break;
switch(choice){
case 1:price=3.0;break;
case 2:price=2.5;break;
case 3:price=4.0;break;
case 4:price=3.5;break;
default:price=0.0;break;
}
printf("price=%0.1f\n",price);
}
printf("Thanks \n");
return 0;
}
#include<stdio.h>
int main(void)
{
double value1,value2;
char op;
printf("Type in an expression:");
scanf("%if%c%if",&value1,&op,&value2);
switch(op){
case'+':
printf("=%.2f\n",value1+value2);
break;
case'-':
printf("=%.2f\n",value1-value2);
break;
case'*':
printf("=%.2f\n",value1*value2);
break;
case'/':
printf("=%.2f\n",value1/value2);
break;
default:
printf("Unknown operator\n");
break;
}
return 0;
}
#include<stdio.h>
int main(void)
{
double value1,value2;
char op;
printf("Type in an expression:");
scanf("%if%c%if",&value1,&op,&value2);
if(op=='+')
printf("=%.2f\n",value1+value2);
else if(op=='-')
printf("=%.2f\n",value1-value2);
else if(op=='*')
printf("=%.2f\n",value1*value2);
else if(op=='/')
if(value2!=0)
printf("=%.2f\n",value1/value2);
else
printf("Divisor can not be 0!\n");
else
printf("Unknown operator!\n");
return 0;
}
