#include<stdio.h> int main(void) { int blank,digit,other; char ch; int i; blank=digit=other=0; printf("Enter 10 characters:"); for(i=1;i<=10;i++){ ch=getchar(); switch(ch){ case' ': case'm': blank++; break; case'0':case'1':case'2':case'3':case'4': case'5':case'6':case'7':case'8':case'9': digit++; break; default: other++; break; } } printf("blank=%d,digit=%d,other=%d ",blank,digit,other); return 0; }
#include<stdio.h> int main(void) { double value1,value2; char op; printf("Type in an expression:"); scanf("%lf%c%lf",&value1,&op,&value2); if(op=='+') printf("=%.2f ",value1+value2); else if(op=='-') printf("=%.2f ",value1+value2); else if(op=='*') printf("=%.2f ",value1*value2); else if(op=='/') if(value2!=0) printf("=%.2f ",value1/value2); else printf("Divisor can not be 0! "); else printf("Unknown operator! "); return 0; }