Introduction
C program to change string to upper case without strupr. I have used Code:: Blocks compiler for debugging purpose. But you can use any C programming language compiler as per your availability.
C program to change string to upper case without strupr
#include <stdio.h>
void functionupper(char []);
int main()
{
char string[100];
printf("Enter a string to convert it into upper case\n");
gets(string);
functionupper(string); // calling functionupper
printf("Entered string in upper case is \"%s\"\n", string);
return 0;
}
void functionupper(char s[]) {
int c = 0;
while (s[c] != '\0') {
if (s[c] >= 'a' && s[c] <= 'z') {
s[c] = s[c] - 32;
}
c++;
}
}Result
