Online C Compiler

#include <stdio.h> int main(){ int i, length = 0; char string[] = "TutORial"; length = sizeof(string)/sizeof(string[0]); for(i = 0; i < length; i++){ if(isupper(string[i])){ string[i] = tolower(string[i]); } else if(islower(string[i])){ string[i] = toupper(string[i]); } } printf("final string after conversion: %s", string); return 0; }