Programming and Data Structure

In this post we will see how to check if two strings are equal in C.For this we will use strcmp function. It compares two strings  lexicographically i.e character by character, if the two character matches moves to next character and compares it. It returns 0 if both strings are equal. #include<stdio.h> #include<string.h> int main() { char str[25]; printf("Enter string 1.\n"); gets(str); char str1[25]; printf("\nEnter string 2.\n"); gets(str1); int i = strcmp(str, str1); if(i==0) { printf("Equal.\n"); } else { printf("Not Equal.\n"); } return 0; }

In this post, I'll show how to find the length of string in C. #include<stdio.h> #include<string.h> int main() { char str[20]; printf("Enter your string.\n"); gets(str); int length = strlen(str); printf("Length of string is %d",length); return 0; }

#include<stdio.h> int main() { char str[25]; printf("Enter string.\n"); gets(str); int i = 0; int count = 0; while(str[i] != '\0') { if(str[i] == 'a' || str[i] == 'e' || str[i] == 'i' || str[i] == 'o' || str[i] == 'u') { count++; } i++; } printf("\nNo. of vowels is %d",count); return 0; }