问题
I want to store the ASCII value of a letter into a variable, how can I do this?
for example :
r ASCII variable = 82
main()
{
character = "character read from a file";
variable= "r ascii"; //(in this case 82), the problem is that the letter is always variable.;
printf( "the value of %c is %d, character, variable)
}
How can I do this?
Also on an extra note, how could I read a .txt
file character by character? so It could be saved on the character variable.
回答1:
Just do:
if (r == 82) {
// provided r is a char or int variable
}
In C, char
variables are represented by their ASCII integer value, so, if you have this:
char r;
r = 82;
if (r == 82) {
}
Is the same as:
char r;
r = 'R';
if (r == 'R') { // 'R' value is 82
}
You can even mix them:
char r;
r = 82;
if (r == 'R') { // will be true
}
回答2:
If you just want to save the ascii
value onto an integer variable
just use this
int b;
char c = 'r';
b = (int)c;
printf("%d",b);
来源:https://stackoverflow.com/questions/7465494/how-to-compare-an-ascii-value