3 replies to this topic

[raonavneet]

can someone give me simple code in c to check if the input enter by a user is an integer, float or a character

[bvaessen]

Maybe there is something standard available in C for this. If not, you could try something like this:

int idx;

char str[STRINGLENGTH];

int numbersfound = 0;

int dotsfound = 0;

for (idx=0; (idx<STRINGLENGTH) && (str[idx]); idx++){

  numbersfound += ((str[idx] >= '0') && (str[idx] <= '9'));

  dotsfound += (str[idx] == '.');

}

if (numbersfound == STRINGLENGTH)

  printf("integer");

else if ((dotsfound == 1) && (numbersfound == STRINGLENGTH-1))

  printf("floating point");

else 

  printf("string");

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[Oigen]

Yea, that code seems to be pretty good. I compiled it and it worked as asked.

[dcs]

raonavneet said:

can someone give me simple code in c to check if the input enter by a user is an integer, float or a character

Maybe check the input string to first see whether it can be converted to an integer, then check to see whether it can be converted to a float, otherwise, assume neither?