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fprintf() in C

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  • Difficulty Level : Easy
  • Last Updated : 28 Oct, 2020
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fprintf is used to print content in file instead of stdout console.

int fprintf(FILE *fptr, const char *str, ...);

Example: 

C




// C Program for the above approach  
#include<stdio.h>
int main()
{
    int i, n=2;
    char str[50];
   
    //open file sample.txt in write mode
    FILE *fptr = fopen("sample.txt", "w");
    if (fptr == NULL)
    {
        printf("Could not open file");
        return 0;
    }
   
    for (i = 0; i < n; i++)
    {
        puts("Enter a name");
        scanf("%[^\n]%*c", str);
        fprintf(fptr,"%d.%s\n", i, str);
    }
    fclose(fptr);
   
    return 0;
}

Input: GeeksforGeeks
       GeeksQuiz
Output:  sample.txt file now having output as 
0. GeeksforGeeks
1. GeeksQuiz

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