Cpp Program To Do String Manipulations
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STRING MANIPULATIONS USING POINTERS #include #include #include<string.h> #include<stdio.h> int strcompare(char *, char *); void strcopy(char *, char *); void strconcatenate(char *, char *); int strlength(char *); int strfindchr(char *, char); int strfindstr(char *, char *); void main() { char a[100], b[100], ch, str[100]; cout<<"\nEnter String 1: "; gets(a); cout<<"Enter String 2: "; gets(b); if(strcompare(a, b) == 1) { cout<<"\nTwo Strings are equal"; } else { cout<<"\nTwo Strings are not equal"; } strcopy(a, b); cout<<"\nFirst String after Copy: "<>ch; if(strfindchr(a, ch) == NULL) { cout<>str; if(strfindstr(a, str) == NULL) {
cout<<str<<" not found"; } else { cout<<str<<" is found at position "<<strfindstr(a, str); } } int strcompare(char *a, char *b) { int equal = 1, i=0; if(strlength(a) != strlength(b)) { return 0; } while(*(a+i) != '\0') { if(*(a+i) != *(b+i)) { equal = 0; break; } i++; } return equal; } void strcopy(char *a, char *b) { int i=0; while(*(b+i) != '\0') { *(a+i) = *(b+i); i++; } *(a+i) = '\0'; } void strconcatenate(char *a, char *b) { int i=0, j=0; while(*(a+i) != '\0') i++; while(*(b+j) != '\0') { *(a+i) = *(b+j); i++; j++; } *(a+i) = '\0';
} int strlength(char *a) { int len=0, i=0; while(*(a+i) != '\0') { i++; len++; } return len; } int strfindchr(char *a, char b) { int found=0, i=0; while(*(a+i) != '\0') { if(*(a+i) == b) { found = 1; break; } i++; } if(found == 0) return NULL; else return i+1; } int strfindstr(char *a, char *b) { int found=0, i=0, j=0, pos; while(*(a+i) != '\0') { found = 1; if(*(a+i) == *(b+j)) { pos = i+1; while(*(b+j) != '\0') { if(*(a+i) != *(b+j)) { found = 0; goto out; } i++; j++; }
goto out; } found=0; i++; } out: if(found == 0) return NULL; else return pos; } For more programs visit http://www.gethugames.in/blog
cout<<str<<" not found"; } else { cout<<str<<" is found at position "<<strfindstr(a, str); } } int strcompare(char *a, char *b) { int equal = 1, i=0; if(strlength(a) != strlength(b)) { return 0; } while(*(a+i) != '\0') { if(*(a+i) != *(b+i)) { equal = 0; break; } i++; } return equal; } void strcopy(char *a, char *b) { int i=0; while(*(b+i) != '\0') { *(a+i) = *(b+i); i++; } *(a+i) = '\0'; } void strconcatenate(char *a, char *b) { int i=0, j=0; while(*(a+i) != '\0') i++; while(*(b+j) != '\0') { *(a+i) = *(b+j); i++; j++; } *(a+i) = '\0';
} int strlength(char *a) { int len=0, i=0; while(*(a+i) != '\0') { i++; len++; } return len; } int strfindchr(char *a, char b) { int found=0, i=0; while(*(a+i) != '\0') { if(*(a+i) == b) { found = 1; break; } i++; } if(found == 0) return NULL; else return i+1; } int strfindstr(char *a, char *b) { int found=0, i=0, j=0, pos; while(*(a+i) != '\0') { found = 1; if(*(a+i) == *(b+j)) { pos = i+1; while(*(b+j) != '\0') { if(*(a+i) != *(b+j)) { found = 0; goto out; } i++; j++; }
goto out; } found=0; i++; } out: if(found == 0) return NULL; else return pos; } For more programs visit http://www.gethugames.in/blog
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