Strings in C

#include <stdio.h>
#include <string.h>   // string functions साठी

int main() {
    // String declare करणे — extra 1 byte \0 साठी
    char name[20] = "Rahul";
    char city[] = "Pune";   // size auto

    printf("Name: %s\n", name);   // %s format specifier
    printf("City: %s\n", city);

    // Character by character access
    printf("First char: %c\n", name[0]);   // R

    // scanf वापरून string input
    char input[50];
    printf("तुमचे नाव टाका: ");
    scanf("%s", input);    // string साठी & नको
    printf("नमस्कार, %s!\n", input);

    return 0;
}

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

int main() {
    char s1[50] = "Hello";
    char s2[] = "World";

    // strlen — length किती?
    printf("Length: %lu\n", strlen(s1));   // 5

    // strcpy — copy करणे
    char s3[50];
    strcpy(s3, s1);   // s3 = "Hello"
    printf("Copied: %s\n", s3);

    // strcat — जोडणे (concatenate)
    strcat(s1, " ");
    strcat(s1, s2);   // s1 = "Hello World"
    printf("Joined: %s\n", s1);

    // strcmp — compare करणे
    // 0 = equal, negative = s1 < s2, positive = s1 > s2
    int result = strcmp("abc", "abc");
    printf("Compare: %d\n", result);  // 0 — equal

    result = strcmp("abc", "xyz");
    printf("Compare: %d\n", result);  // negative — 'a' < 'x'

    // strupr / strlwr — case बदलणे (non-standard)
    char lower[] = "hello";
    printf("Upper: ");
    for (int i = 0; lower[i]; i++) {
        printf("%c", lower[i] - 32);   // ASCII trick
    }
    printf("\n");

    return 0;
}