#include #include #include int checkLength(char *ptr) { int l = strlen(ptr); if (l < 5 || l > 10) { printf("length violations\n"); return 0; } else return 1; } int checkAlphabet(char *ptr) { int i = 0, alphabetCount = 0; int l = strlen(ptr); while (i < l) { if (((*ptr >= 65) && (*ptr <= 90)) || ((*ptr >= 97) && (*ptr <= 122))) alphabetCount++; ptr++; i++; } if (alphabetCount > 0) return 1; else { printf("no character in string\n"); return 0; } } int checkNumber(char *ptr) { int i = 0, numeberCount = 0; int l = strlen(ptr); while (i < l) { if ((*ptr >= 48) && (*ptr <= 57)) numeberCount++; ptr++; i++; } if (numeberCount > 0) return 1; else { printf("no number in string\n"); return 0; } } int checkSpecial(char *ptr) { int i = 0, specialCount = 0; int l = strlen(ptr); while (i < l) { if (((*ptr >= 33) && (*ptr <= 47)) || ((*ptr >= 58) && (*ptr <= 64)) || ((*ptr >= 91) && (*ptr <= 96)) || ((*ptr >= 123) && (*ptr <= 126))) specialCount++; ptr++; i++; } if (specialCount > 0) return 1; else { printf("No special character in string\n"); return 0; } } int main() { char *str; int length = 0, spC = 0, numC = 0, alpC = 0; str = malloc(256); scanf("%s", str); length = checkLength(str); alpC = checkAlphabet(str); numC = checkNumber(str); spC = checkSpecial(str); if (length && spC && numC && alpC) printf("\nEntered passwords are valid\n"); else printf("\nEntered passwords are invalid\n"); return 0; }

password validation(community challenge)