PASS Week 4/7 Solutions

Week 4/7 SOLUTIONS

PROBLEM 1

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

int main(void)
{
    char ary[] = "2019";
	char* str = NULL;
    char* str2 = "2021";

    printf("%s %d\n", ary, (int)strlen(ary));
    printf("%s %d\n", str, (int)strlen(str));
    printf("%s %d", str2, (int)strlen(str2));

return 0;
}












PROBLEM 2

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

int main(void)
{
    char ary[] = "Godzilla is gonna win";
    //char* ary = "Godzilla is gonna win";

    for (int i = strlen(ary); i >= 0; i--){
        printf("%c", ary[i]);
    }

return 0;
}











PROBLEM 2B

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

int main(void)
{
    char ary[] = "Godzilla is gonna win.";

    printf("%s", ary);

return 0;
}


















Problem 3

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

int main(void)
{
    char str[80] = "";

    printf("Enter in a sentence up to 80 characters: ");
    fgets(str, 80, stdin);
    printf("\n");

    printf("Here is your sentence: %s", str);

	return 0;
}


















Problem 4

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

int main(void)
{
    char str[80] = "";

    printf("Enter in a sentence up to 80 characters: ");
    fgets(str, 80, stdin);
    printf("\n");

    printf("Here is your sentence: %s", str);

    for (int i = 0; i < strlen(str); i++){
        if (isupper(str[i])){
            printf("%c is Uppercase\n", str[i]);
        }
        else if (islower(str[i])){
            printf("%c is Lowercase\n", str[i]);
        }
        else{
            printf("\n");
        }
    }
return 0;
}







Problem 4B

[Don't have one lol]