string length c
#include <stdio.h>
#include <string.h>
int main()
{
char a[20]="Program";
char b[20]={'P','r','o','g','r','a','m','\0'};
// using the %zu format specifier to print size_t
printf("Length of string a = %zu \n",strlen(a));
printf("Length of string b = %zu \n",strlen(b));
return 0;
}string strcat function in c
#include <stdio.h>
#include <string.h>
int main() {
char str1[100] = "This is ", str2[] = "A Name";
// concatenates str1 and str2
// the resultant string is stored in str1.
strcat(str1, str2);
puts(str1);
puts(str2);
return 0;
}fseek function in c
FILE* fp;
// if file is 50 bytes long:
fseek(fp, /* from the end */ 23, SEEK_END); // <- at 50 - 23 so 27
fseek(fp, /* from the start */ 23, SEEK_SET); // 23
fseek(fp, /* from the the current (see ftell) */ 10, SEEK_CUR); // 33strlen return
>> strlen(buffer) function shall return the length of buffer excluding null termination;
no return value shall be reserved to indicate an error.Copyright © 2021 Codeinu
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