#include #include #include int UpperLower(char *temp);int main(){ char strtest[10] = {0}; strcpy(strtest, "aBcDeF!@#"); printf("Orinal Str - %s\n\n", strtest); UpperLower(strtest); printf("UpperLower - %s\n\n", strtest); return 0;}int UpperLower(char *temp){ for( ; *temp != NULL; temp++) { if(isalpha(*temp)) { *temp = *temp ^ 0x20; } } return 0;}