#include <stdio.h>
#include <ctype.h>
int main () {
int var1 = 'h';
int var2 = '2';
if( isdigit(var1) ) {
printf("var1 = |%c| is a digit/n", var1 );
} else {
printf("var1 = |%c| is not a digit/n", var1 );
}
if( isdigit(var2) ) {
printf("var2 = |%c| is a digit/n", var2 );
} else {
printf("var2 = |%c| is not a digit/n", var2 );
}
return(0);
}
原创文章，作者：ItWorker，如若转载，请注明出处：https://blog.ytso.com/tech/pnotes/265175.html