test8_4.txt

Linux下的C语言编程

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

char *upcase(char *inputstring);

int main(void)
{
    	char *str1, *str2;
    
    	str1=upcase("Hello" );
    	str2=capitao("Goodbye");

    	printf("str1=%s, str2=%s\n", str1, str2);

    	free(str1);
    	free(str2);

    	return 0;
}


char *upcase(char *inputstring)
{
    	char *newstring;
    	int counter;

    	if(!(newstring=malloc(strlen(inputstring)+1)))
	{
    		printf("ERROR ALLOCATING MEMORY! \n");
    		exit(255);
	}
    	strcpy(newstring, inputstring);
	for(counter=0; counter<strlen(newstring); counter++)
	{
        	if(newstring[counter]>=97&&newstring[counter]<=122)
             		newstring[counter]-=32;
	}
	return newstring;
}