How to print ASCII values using c?

Answer 1

Well in C++:

#include <iostream>

int main()

{

char x;

for(int i = 0; i < 255; i++)

{

x = i;

std::cout << i << "\t" << x << std::endl;

}

char wait;

std::cin >> wait;

return 0;

}

Answer 2

#include <stdio.h>

void main()

{

int c;

printf("Please enter a string, terminate with Ctrl+Z");

for ((c=getchar())!=EOF) printf ("%c %d\n", c, c);

}

Answer 3

You'd have to convert the value to the char type.

Example(C):

#include <stdio.h>

...

int n = 65;

printf("%c\n", n); //printf treats n as a character due to %c flag

....

Example(C++):

#include <iostream>

...

int n = 65;

std::cout << (char)n << std::endl; //here the conversion is needed

...

Answer 4

The following code demonstrates two ways to print characters and their ASCII equivalent. Note that although C++ treats all character as a numeric value, you must cast the numeric value to a numeric type (such as a short) in order to print the value, rather than the symbol associated with the value. Similarly, if you have a numeric value (such as a short) that represents a char, you must cast the numeric value to a char in order to print the symbol.

#include<iostream>

int main()

{

for(char c=65; c<91; ++c )

std::cout<<c<<" = "<<(short)c<<std::endl;

for(short s=97; s<123; ++s )

std::cout<<(char) s<<" = "<<s<<std::endl;

}

Answer 5

Basically what i need the code to do is to change a string of characters in to either uppercase or lowercase depending on wether or not the 3 input character is upper or lower case (i.e. if uppercase if will convert the string entirely into uppercase and if lower to lowercase)

so far i have this....

#include <stdio.h>

#include <string.h>

#include <ctype.h>

int main (void)

{

char array [65];

int i, c2;

fgets (array, 65, stdin);

c2 = array[2];

for (i = 0; array[i]; i++) {

. if (isupper (c2) && isupper (array[i])) {

. . array[i] = tolower (array[i]);

. } else if (islower (c2) && islower (array[i]) {

. . array[i] = toupper(array[ i ]);

. }

}

printf("Output is: %s\n", array);

}