#include <stdio.h>
#include <stdlib.h>
#include <math.h>
#include <ctype.h>
#include <string.h>
#include <ctype.h>
#include <wctype.h>


int main(int argc, char *argv[])
{
	char end[3];
	
	char name[3];
	
	
	printf("Enter your name: \n");
	fgets(name, sizeof(name), stdin);
	if (name[strlen(name)-1] == '\n') name[strlen(name)-1] = '\0';
	name = toupper (name);
	
	
	
	
	printf("your name is %s. \n",name);


	
	printf("\nType Enter to exit program: \n");
	fgets(end, sizeof(end), stdin);
	end[strlen(end) -1] = '\0';
	exit;
	
  return 0;
}

#include <ctype.h>

int main () {
        char foo[] = "foo";
        char x = toupper(foo);
        char y = toupper(*foo);
        return 0;
}

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <ctype.h>

void convertStringToUpper(char* pstr)
{
    if(pstr != NULL)
    {
	while(*pstr)
	{
	    *pstr = toupper(*pstr);
	    ++pstr;
	}
    }
}

int main()
{
    char a_string[1024];
    printf("Enter a character string: ");
    fgets(a_string, sizeof(a_string)/sizeof(char), stdin);
    a_string[strlen(a_string)-1] = '\0';
    printf("Your string converted to uppercase is:\n\n");
    convertStringToUpper(a_string);
    printf("%s\n", a_string);

    return 0;
}