摘要：
#includeint main(void){ double value1,value2; char op; printf("Type in an expression:"); scanf("%lf%c%lf",&value1,&op,&value2); if(op=='+') printf("=%.2f\n",value1+value2); else if(op=='-') printf("=%.2f\n",value1-value2); else if(o 阅读全文
摘要：
#includeint 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'\n': blank++; break; case'0':... 阅读全文
摘要：
#includeint main(void){ double value1,value2; char op; printf("Type an expression:"); scanf("%lf%c%lf",&value1,&op,&value2); switch(op){ case'+': printf("=%.2lf\n",value1+value2); break; case'-': printf("=%.2lf\n",value1-value2... 阅读全文
摘要：
#includeint main(void){ int i,choice; 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:") 阅读全文
摘要：
#includeint main(void){ int dight,letter,other; char ch; int i; dight=letter=other=0; printf("Enter 10 characters:"); for(i=1;i='a'&&ch='A'&&ch='0'&&ch<='9') dight++; else other++; } printf("letter=%d,dight=%d,other=%d",l 阅读全文
摘要：
#includeint main(void){ double value1,value2; char op; printf("Type in an expression:"); scanf("%lf%c%lf",&value1,&op,&value2); if(op=='+') printf("=%.2f\n",value1+value2); else if(op=='-') printf("=%.2f\n",value1-value2); else if(o 阅读全文
摘要：
#includeint main(void){ double x,y; printf("Enter x:"); scanf("%lf",&x); if(x<0){ y=0; } else if(x<=15){ y=4*x/3; } else{ y=2.5*x-10.5; } printf("f(%.2f)=%2f\n",x,y); return 0;} 阅读全文