/* Example about the utilization of strings and the string.h library */ #include #include #define N 20 int main(){ char str1[N], str2[N], str3[]="abc"; printf("STR3 : %s\n", str3); /*scanf("%s", str1);*/ /* Read only a word */ gets(str1); /* Read the whole line */ printf("STR1 : %s\n", str1); strcpy(str2, str1); /* Copy the content of str1 in str2 */ printf("STR2 : %s\n", str2); printf("LEN : %d\n", (int)strlen(str2)); /* strlen returns the length of a string */ str2[3] = '\0'; /* Writes the end-of-string character '\0' in the position number 3 of the array of character. The string is truncated at position 2 (the resulting string is therefore formed by only 3 characters) */ printf("STR2b: %s\n", str2 ); if (strcmp(str1, str2)==0){ /* The function strcmp returns 0 if the two strings are equals, a value other than 0 if they are different (<0 if str1 is less than str2, >0 if str1 is greater than str2 */ printf("str1 is equal to str2\n"); }else{ printf("str1 different from str2\n"); } return 0; }