C Run-Time Library Reference
isupper
detect uppercase character
Synopsis
#include <ctype.h>
int isupper(int c);
Description
The
function determines if the argument is an uppercase charac-
isupper
ter (
). If the argument is not an uppercase character,
A-Z
zero. If the argument is an uppercase character,
non-zero value.
Error Conditions
The
function does not return any error conditions.
isupper
Example
#include <ctype.h>
int ch;
for (ch=0; ch<=0x7f; ch++) {
printf("%#04x", ch);
printf("%2s", isupper(ch) ? "uppercase" : "");
putchar('\n');
}
See Also
isalpha,
islower
3-84
VisualDSP++ 3.5 C/C++ Compiler and Library Manual
returns a
isupper
returns a
isupper
for ADSP-219x DSPs
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