Char Comparison in C

Question

I m trying to compare two chars to see if one is greater than the other  To see if they were equal  I used strcmp  Is there anything similar to strcmp that I can use

User · Answer

In C the char type has a numeric value so the   operator will work just fine for example   include  lt stdio h gt  main          char a  z        char b  h        if   a  gt  b             printf   c greater than  c n  a b

User · Answer

I believe you are trying to compare two strings representing values  the function you are looking for is   int atoi const char  nptr     or  long int strtol const char  nptr  char   endptr  int base     these functions will allow you to convert a string to an int long int   int val   strtol  555   NULL  10     and compare it to another value   int main  int argc  char  argv          long int val   0      if  argc  lt  2                fprintf stderr   Usage   s number n   argv 0            exit EXIT FAILURE              val   strtol argv 1   NULL  10       printf   d is  s than 555 n   val  val  gt  555    bigger     smaller         return 0

User · Answer

A char variable is actually an 8-bit integral value  It will have values from 0 to 255  These are ASCII codes  0 stands for the C-null character  and 255 stands for an empty symbol   So  when you write the following assignment   char a    a      It is the same thing as   char a   97    So  you can compare two char variables using the  gt    lt        lt     gt   operators   char a    a   char b    b    if  a  lt  b   printf   c is smaller than  c   a  b   if  a  gt  b   printf   c is smaller than  c   a  b   if  a    b   printf   c is equal to  c   a  b

[c] Char Comparison in C

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