C Programming

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

int main() {
    char str1[50] = "Hello";
    char str2[50] = "World";
    char str3[50];
    
    // String copy
    strcpy(str3, str1);
    printf("After strcpy: %s\n", str3);
    
    // String concatenation
    strcat(str1, " ");
    strcat(str1, str2);
    printf("After strcat: %s\n", str1);
    
    // String comparison
    if (strcmp(str2, "World") == 0) {
        printf("Strings are equal\n");
    }
    
    // String length
    printf("Length of str1: %lu\n", strlen(str1));
    
    return 0;
}