The library function used to find the last occurrence of a character in a string

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The library function used to find the last occurrence of a character in a string is



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2) What is the output of this C code?

#include <stdio.h>
int main()
{
char *str = "hello, world\n";
printf("%d", strlen(str));
}

3) What is the output of this C code?

#include <stdio.h>
int main()
{
char *str = "hello";
char str1[5];
strcpy(str, str1);
printf("%s", str1);
}

4) What will be the output of the following program?

void main()
{
char str1[] = "abcd";
char str2[] = "abcd";
if(str1==str2)
printf("Equal");
else
printf("Unequal");
}

5) What is the output of this C code?

#include <stdio.h>
int main()
{
char str[11] = "hello";
char *str1 = "world";
strcat(str, str1);
printf("%s %d", str, str[10]);
}

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