Answer Posted / mahfooz alam

#include <iostream>
#include<fstream>
using namespace std;
int main()
{
int arr[26]={0},i;
ifstream fin;
ofstream fout;
fout.open("input.txt",ios::app);
fin.open("input.txt",ios::out);
char c;
fin>>c;
while(!fin.eof())
{
if(isalpha(c))
{
tolower(c);
switch(c)
{
case 'a':
arr[0]++;
break;
case 'b':
arr[1]++;break;
case 'c':
arr[2]++;break;
case 'd':
arr[3]++;break;
case 'e':
arr[4]++;break;
case 'f':
arr[5]++;break;
case 'g':
arr[6]++;break;
case 'h':
arr[7]++;break;
case 'i':
arr[8]++;break;
case 'j':
arr[9]++;break;
case 'k':
arr[10]++;break;
case 'l':
arr[11]++;break;
case 'm':
arr[12]++;break;
case 'n':
arr[13]++;break;
case 'o':
arr[14]++;break;
case 'p':
arr[15]++;break;
case 'q':
arr[16]++;break;
case 'r':
arr[17]++;break;
case 's':
arr[18]++;break;
case 't':
arr[19]++;break;
case 'u':
arr[20]++;break;
case 'v':
arr[21]++;break;
case 'w':
arr[22]++;break;
case 'x':
arr[23]++;break;
case 'y':
arr[24]++;break;
case 'z':
arr[25]++;break;
}
}
fin>>c;
}//endl of while.*/
for(i=0;i<26;i++)
fout<<"no of letter "<<static_cast<char>(i+65)<<" is
"<<arr[i]<<endl;
fin.close();
return 0;
}

The program will first compute the tax you owe based on your income. User is prompted to enter income. Program will compute the total amount of tax owed based on the following: Income Tax 0 - $45,000 = 0.15 x income $45,001 - $90,000 = 6750 + 0.20 x (income – 45000) $90,001 - $140,000 = 15750 + 0.26 x (income – 90000) $140,001 - $200,000 = 28750 + 0.29 x (income – 140000) Greater than $200,000 = 46150 + 0.33 x (income – 200000) Dollar amounts should be in dollars and cents (float point numbers with two decimals shown). Tax is displayed on the screen.

1570

---

What is a static function in c?

1104

---

How can I send mail from within a c program?

983

---

Can you mix old-style and new-style function syntax?

1047

---

How do you construct an increment statement or decrement statement in C?

1175

---

What are the main characteristics of c language describe the structure of ac program?

1148

---

hi... can anyone help me to make a two-dimensinal arrays in finding the sum of two elements plzzz. thnx a lot...

1860

---

Is c object oriented?

910

---

What is a list in c?

982

---

What is identifiers in c with examples?

1117

---

What are the features of the c language?

1035

---

What is the use of printf() and scanf() functions?

1068

---

How can I do graphics in c?

982

---

What are header files in c?

1020

---

Can we change the value of #define in c?

958

---