#include <stdio.h>
#include <stdlib.h>


int main() {
    FILE * input;
    FILE * output;
    input = fopen("in.txt", "r");
    output = fopen("out.txt", "w");
    float multiplicator;
    printf("Multiplicator: "); scanf("%f", &multiplicator);
    int openInt, endInt;
    printf("a= : "); scanf("%d", &openInt);
    printf("b= : "); scanf("%d", &endInt);
    char name[100];
    float salar;
    while (fscanf(input, "%[^,]s", &name) != EOF) {
        fscanf(input, "%*c");
        fscanf(input, "%f", &salar);


        if (salar >= openInt && salar <= endInt)
            fprintf(output, "%s, %f", name, multiplicator * salar);
        else
            fprintf(output, "%s, %f", name, salar);

    }

    system("pause");
    return 0;
}