1.
/**
Module Name:
Description:
Author:
Created:
Last Change:
Functions:
*/
#include<stdio.h>
int main(void)
{
char ch[26];
int i;
for(i=0;i<26;i++)
{
ch[i]='a'+i;
printf("%c",ch[i]);
}
getchar();
return 0;
}
2.
/**
Module Name:
Description:
Author:
Created:
Last Change:
Functions:
*/
#include<stdio.h>
int main(void)
{
int i,j;
for(i=0;i<5;i++)
{
for(j=0;j<i+1;j++)
printf("$");
printf("\n");
}
getchar();
return 0;
}
3.
/**
Module Name:
Description:
Author:
Created:
Last Change:
Functions:
*/
#include<stdio.h>
int main(void)
{
int N=6,i,j;
for(i=0;i<N;i++){
for(j=0;j<=i;j++){
printf("%c",(char)('A'+N-1-j));
}
printf("\n");
}
return 0;
}
4.
/**
Module Name:
Description:
Author:
Created:
Last Change:
Functions:
*/
#include<stdio.h>
int main(void)
{
int i=0,j=0;
char aaa='A';
for(i=1;i<=6;i++){
for(j=1;j<=i;j++){
printf("%c",aaa++);
}
printf("\n\n");
}
return 0;
}
5.
/**
Module Name:
Description:
Author:
Created:
Last Change:
Functions:
*/
#include<stdio.h>
int main(void)
{
int i,j,k;
char letter;
printf("please input a capital:");
scanf("%c",&letter);
k=letter-'A'+1;
for(i=0;i<k;i++){
for(j=0;j<k-i;j++)
printf(" ");
for(j=0;j<=i;j++)
printf("%c",'A'+j);
for(j=i-1;j>=0;j--)
printf("%c",'A'+j);
printf("\n");
}
return 0;
}
6.
/**
Module Name:
Description:
Author:
Created:
Last Change:
Functions:
*/
#include<stdio.h>
int main(void)
{
int lower,upper,index;
int square,cube;
printf("Enter starting integer and ending integer:");
while(scanf("%d %d",&lower,&upper)==2){
printf("%5s %10s %15d\n","num","square","cube");
for(index=lower;index<=upper;index++){
square=index*index;
cube=index*square;
printf("%5d %10d %15d\n",index,square,cube);
}
printf("Enter next pair(non-numeric to quit):\n");
}
return 0;
}
7.
/**
Module Name:
Description:
Author:
Created:
Last Change:
Functions:
*/
#include<stdio.h>
int main(void)
{
char a[20];
int i;
printf("please input a word:");
scanf("%s",a);
for(i=strlen(a)-1;i>=0;i--)
printf("%c",a[i]);
printf("\n");
return 0;
}
8.
/**
Module Name:
Description:
Author:
Created:
Last Change:
Functions:
*/
#include<stdio.h>
int main(void)
{
float a,b,c;
printf("Enter two float numbers:");
while(scanf("%f %f",&a,&b)==2){
c=(a-b)/(a*b);
printf("c=%f\n",c);
printf("Enter next pair(non-numeric to quit):\n");
}
return 0;
}
9.
/**
Module Name:
Description:
Author:
Created:
Last Change:
Functions:
*/
#include<stdio.h>
int main(void)
{
int lower,upper,index;
printf("Enter lower and upper integer limits: ");
while(scanf("%d %d",&lower,&upper)==2 && lower !=upper){
int sum=0;
for(index=lower;index<=upper;index++){
sum+=index*index;
}
printf("the sums of the squares from %d to %d is %d\n",lower*lower,upper*upper,sum);
printf("Enter next set of limits: ");
}
printf("done\n");
return 0;
}
10.
/**
Module Name:
Description:
Author:
Created:
Last Change:
Functions:
*/
#include<stdio.h>
#define SIZE 8
int main(void)
{
int a[SIZE],i;
printf("enter %d interges.\n",SIZE);
for(i=0;i<SIZE;i++)
scanf("%d",&a[i]);
for(i=SIZE-1;i>=0;i--)
printf("%d",a[i]);
printf("\n");
return 0;
}
11.
/**
Module Name:
Description:
Author:
Created:
Last Change:
Functions:
*/
#include<stdio.h>
int main(void)
{
float number1=1.0,number2=1.0;
float result1=0,result2=0;
int item;
int i;
printf("please input the items:\n");
scanf("%d",&item);
for(i=1;i<=item;i++,number2++){
result1=result1+number1/number2;
}
foe(i=1;i<=item;i++,number2++){
if(i%2==0){
number1=-1.0;
}
else{
number1=1.0;
}
result2=result2+number1/number2;
}
printf("result1=%f\n result2=%f",result1,result2);
return 0;
}
12.
/**
Module Name:
Description:
Author:
Created:
Last Change:
Functions:
*/
#include<stdio.h>
#define SIZE 8
int main(void)
{
int a[SIZE],i;
a[0]=1;
for(i=1;i<SIZE;i++){
a[i]=2*a[i-1];
}
i=0;
do{
printf("%d",a[i]);
i++;
}
while(i<SIZE);
printf("\n");
return 0;
}
13.
/**
Module Name:
Description:
Author:
Created:
Last Change:
Functions:
*/
#include<stdio.h>
int main(void)
{
double array1[8],array2[8];
int i=0;
double sum=0;
printf("please input 8 integers:\n");
for(i=0 ;i<8;i++){
scanf("%1f",&array1[i]);
sum=sum+array1[i];
}
for(i=0;i<8;i++){
printf("%8.0f",array1[i]);
}
printf("\n");
for(i=0;i<8;i++){
printf("%8.0f",array2[i]);
}
return 0;
}
14.
/**
Module Name:
Description:
Author:
Created:
Last Change:
Functions:
*/
#include<stdio.h>
int main(void)
{
char data[255];
int i=-1;
do{
i++;
scanf("%c",&data[i]);
}
while(data[i]!='\n');
for(i=-1;i>=0;i--)
return 0;
}
15.
/**
Module Name:
Description:
Author:
Created:
Last Change:
Functions:
*/
#include<stdio.h>
int main(void)
{
double sum1=100.00,sum2=100.00;
double a=100.00;
int year=0;
do{
year++;
sum1=sum1+a 0.1;
sum2=sum2+sum2 0.05;
}
while(sum1>=sum2);
printf("after %d year,deirdre's account:%.2f,daphne's account:%.2f\n",year,sum1,sum2);
return 0;
}
16.
/**
Module Name:
Description:
Author:
Created:
Last Change:
Functions:
*/
#include<stdio.h>
int main(void)
{
double sum=100.00;
int year=0;
do{
year++;
sum=sum+sum*0.08;
sum-=10;
}
while(sum>0);
printf("after %d year,chuckie lucky has no money!\n",year);
return 0;
}
17.
/**
Module Name:
Description:
Author:
Created:
Last Change:
Functions:
*/
#include<stdio.h>
int main(void)
{
int quantity=5;
int week=0;
do{
week++;
quantity-=week;
quantity=quantity*2;
}
while(quantity<=150);
printf("after %d weeks,rabnud's friends over 150!\n",week);
return 0;
}
18.
/**
Module Name:
Description:
Author:
Created:
Last Change:
Functions:
*/
#include<stdio.h>
#define RATE_SIMP 0.10
#define RATE_COMP 0.05
#define INIT_AMT 100
int main(void)
{
double daphne=INIT_AMT;
double deidre=INIT_AMT;
int years=0;
while(deire<=daphne){
daphne+=RATE_SIMP*INIT_AMT;
deidre+=RATE_COMP*deidre;
years++;
}
printf("%d years later,deidre's money more than daphne's\n",years);
printf("daphne=%f\n",daphne);
printf("deidre=%f",deidre);
return 0;
}
